BESOSA, District Judge.
*237Defendants S2 Services Puerto Rico, LLC ("S2") and Rapiscan Systems, Inc. ("Rapiscan") move to dismiss the plaintiffs' amended complaint pursuant to Federal Rule of Civil of Procedure 12(b)(1) ("Rule 12(b)(1)") and Federal Rule Civil Procedure 12(b)(6) (" Rule 12(b)(6)"). (Docket No. 55.) Defendant Puerto Rico Ports Authority ("PRPA") also moves to dismiss the plaintiffs' amended complaint pursuant to Rule 12(b)(1), Rule 12(b)(6), and Federal Rule of Civil Procedure 12(b)(7) (" Rule 12(b)(7)"). (Docket No. 85.) For the reasons set forth below, the Court GRANTS IN PART and DENIES IN PART S2, Rapiscan, and PRPA (collectively, "defendants")'s motions to dismiss (Docket Nos. 55 and 85.) The defendants' motion to stay discovery pending the ruling on these motions is moot (Docket No. 89.)
I. Factual Background
The Court construes the following facts from the amended complaint "in the light most favorable to the plaintiffs" and "resolve[s] any ambiguities" in the plaintiffs' favor. See Ocasio-Hernández v. Fortuño-Burset, 640 F.3d 1, 17 (1st Cir. 2011) (discussing the Rule 12(b)(6) standard of review); see Viqueira v. First Bank, 140 F.3d 12, 15 (1st Cir. 1998) (discussing the Rule 12(b)(1) standard of review).
On December 17, 2009, PRPA and Rapiscan signed an agreement allowing Rapiscan "to conduct all services of non-intrusive scanning of shipping containers entering Puerto Rico through the port of San Juan," although PRPA "had not been expressly delegated legal authority or police powers to inspect cargo." (Docket No. 19 at pp. 9-10.) About eight months later, Rapiscan "assigned all of its purported rights and obligations under its agreement with PRPA to [S2], its wholly owned subsidiary." Id. at p. 10.
In February 2011, PRPA conceded that "it is not the government instrumentality with the proper legal jurisdiction and authority to intervene as of right in [the inspection of cargo containers]" in a "Memorandum of Understanding" executed by PRPA and the Puerto Rico Department of Treasury. See Docket No. 19 at pp. 10-11 (alteration in original). PRPA, nonetheless, approved Regulation 8067, which required "the ocean carriers or their agents" to "pay PRPA the Enhanced Security Fee to recover the costs incurred by PRPA in the scanning program." Id. at p. 11.2 "Ocean carriers and their agents, in *238turn, collected Enhanced Security Fees from shippers like named Plaintiffs ... who import cargo through the maritime ports of San Juan." Id. (internal quotation marks omitted).
On October 16, 2013, the Court enjoined Puerto Rico "from collecting enhanced security fees from shipping operators that are not being scanned pursuant to Regulation [ ] 8067." Cámara de Mercadeo, Industria y Distribución de Alimentos v. Vázquez, 2013 WL 5652076, at *15 (D.P.R. Oct. 16, 2013) (McGiverin, Mag. J.), aff'd on other grounds, Industria y Distribuctión de Alimentos v. Trailer Bridge, 797 F.3d 141 (1st Cir. 2015). The Court found that the "enhanced security fee is unconstitutional as applied to shipping operators without scanning facilities because it (1) does not fairly approximate their use or privilege of using port scanning facilities, and (2) is excessive relative to the benefits conferred." Id. at *12.
Regulation 8067 was set to expire in June 30, 2014, "unless such term was extended, modified or amended prior [to] its expiration." (Docket No. 19 at p. 12.) PRPA did not extend, modify, or amend Regulation 8067, "but continued to implement the cargo scanning program despite and beyond its expiration." Id.
In October 2016, the Puerto Rico Court of Appeals ordered PRPA "to immediately cease and desist from carrying out any procedure under [Regulation 8067]" because Regulation 8067 "was not in force." Cámara de Mercadeo, Industria y Distribución de Alimentos v. Autoridad de los Puertos, 2016 WL 7046805, at *8 (P.R. Ct. App. Oct. 28, 2016) (official translation at Docket No. 73 at p. 9). Regulation 8067 required "the extension of the established term of validity" to "be done during its term," and because Regulation 8067 was not extended prior to its expiration, the Puerto Rico Court of Appeals held that the "decree had no effect." Id. at *7 (official translation at Docket No. 73 at p. 8).
The defendants, nevertheless, have "acted and/or continued to act in collecting [ ] Enhanced Security Fees in connection with the cargo scanning program." (Docket No. 19 at p. 13.) The defendants have also continued to collect enhanced security fees from the plaintiffs for "non-containerized cargo such as cars, ISO tanks, cargo on platforms, and other types of cargo which are imported without using shipping containers," as well as "cargo entering the Port of San Juan, through some marine terminals which do not have access to scanning stations," and "cargo ... that [is] not being scanned at all," Docket No. 19 at pp. 13-15, despite the Court's ruling that the defendants cannot collect such fees from "shipping operators that are not being scanned pursuant to Regulation [ ] 8067." Vázquez, 2013 WL 5652076, at *15. The defendants have "collected and derived economic benefit from the Enhanced Security Fees," and the plaintiffs have sustained "substantial and continuing economic losses" in amounts "believed to be in excess of $150,000,000.00" because of the defendants' actions. (Docket No. 19 at p. 15.)
II. Procedural History
The plaintiffs commenced this action on April 5, 2017 "as entities that paid fees for the scanning cargo imported into Puerto Rico through the maritime port of San Juan that were illegally collected by Defendants" in violation of federal and Puerto Rico law. (Docket No. 1 at p. 2; Docket No. 19 at pp. 2-3.) They filed an amended complaint approximately five months later seeking relief pursuant to 42 U.S.C. section 1983 (" section 1983"), based on the Fifth Amendment, the Fourteenth Amendment, and the Commerce Clause, and pursuant to Puerto Rico civil code, articles 7, *239200, and 1795. Docket No. 19 at pp. 21-30; see 42 U.S.C. § 1983 ; P.R. Laws Ann. tit. 3, §§ 7, 901, 5121.
On December 19, 2017, S2 and Rapiscan moved to dismiss the amended complaint. (Docket No. 55.) According to S2 and Rapiscan, the plaintiffs "lack standing to challenge the Enhanced Security Fees at issue because they did not pay them-the fees were imposed on ocean freight carriers who independently decided whether, and in what amount, to pass their own costs onto merchants such as Plaintiffs." Id. at p. 1. S2 and Rapiscan argue that the amended complaint "fails to state cognizable claims against Rapiscan and S2 under 42 U.S.C. § 1983 because it does not allege that Rapiscan or S2 individually caused any violation of Plaintiffs' alleged constitutional rights." Id. In the alternative, S2 and Rapiscan contend that they are "entitled to qualified immunity from suit under § 1983 as a former and current government contractor, respectively, sued solely on the basis of their contracted services."Id. S2 and Rapiscan also maintain that the amended complaint "fails to state claims for unjust enrichment and undue collection under Puerto Rico law because it does not allege that Rapiscan or S2 received compensation for their services without cause." Id.
On May 23, 2018, PRPA moved to dismiss the amended complaint. (Docket No. 85.) Like S2 and Rapiscan, PRPA asserts that the plaintiffs' claims are "improperly anchored on their carriers' independent decisions to charge operating fees" and thus do "not satisfy the constitutional standing requirements." Id. at p. 1. In the alternative, PRPA argues that it "is an arm of the state cloaked with sovereign immunity," which "shields it from legal actions that precisely target its governmental functions." Id. at p. 2. PRPA also contends that:
(1) Plaintiffs' Section 1983 claims are mostly time barred; (2) Plaintiffs have failed to include the Ocean Freight Carriers, who are indispensable to any litigation challenging the collection of [enhanced security fees]; (3) the [ ] amended complaint fails to state a cause of action for unjust enrichment or undue collection; (4) Plaintiff's regulatory takings claim is flawed, inasmuch as it is incorrectly based on PRPA's alleged ultra vires acts; and (5) Plaintiffs' claim regarding PRPA's alleged ultra vires conduct are inapposite.
Id. While the Court disagrees with the defendants' arguments regarding standing and immunity, the Court agrees that the plaintiffs fail to establish takings, procedural due process, and substantive due process claims pursuant to section 1983. The Court, nevertheless, finds that the plaintiffs state a valid Commerce Clause claim pursuant to section 1983, as well as Puerto Rico law claims.
III. Standards of Review
Rule 12(b) permits a party to assert defenses against claims for relief. Fed. R. Civ. P. 12. A court, nonetheless, "must construe the complaint liberally," Aversa v. United States, 99 F.3d 1200, 1210 (1st Cir. 1996), and a complaint that adequately states a claim may still proceed even if "recovery is very remote and unlikely." Ocasio-Hernández, 640 F.3d at 13 (internal quotation marks and citations omitted); see Katz v. Pershing, LLC, 672 F.3d 64, 70 (1st Cir. 2012) ("In considering the pre-discovery grant of a motion to dismiss for lack of standing, [courts] accept as true all well-pleaded factual averments in the plaintiff's ... complaint and indulge all reasonable inferences therefrom in his favor.") (internal citation omitted).
Rule 12(b)(1) allows a court to dismiss a complaint when a plaintiff fails to *240establish subject-matter jurisdiction. Fed. R. Civ. P. 12(b)(1). The party asserting jurisdiction has the burden of demonstrating the existence of federal jurisdiction. See Droz-Serrano v. Caribbean Records Inc., 270 F.Supp.2d 217, 217 (D.P.R. 2003) (García-Gregory, J.) (citing Murphy v. United States, 45 F.3d 520, 522 (1st Cir. 1995) ). "As courts of limited jurisdiction, federal courts have the duty to construe their jurisdictional grants narrowly." Fina Air, Inc. v. United States, 555 F.Supp.2d 321, 323 (D.P.R. 2008) (Besosa, J.) (citing Alicea-Rivera v. SIMED, 12 F.Supp.2d 243, 245 (D.P.R. 1998) (Fusté, J.) ).
A defendant may move to dismiss an action for failure to state a claim upon which relief can be granted. Fed. R. Civ. P. 12(b)(6). To survive a Rule 12(b)(6) motion to dismiss, a complaint must contain sufficient factual matter "to state a claim to relief that is plausible on its face." Bell Atl. Corp. v. Twombly, 550 U.S. 544, 570, 127 S.Ct. 1955, 167 L.Ed.2d 929 (2007). A court must decide whether the complaint alleges sufficient facts to "raise a right to relief above the speculative level." Id. at 555, 127 S.Ct. 1955.
A party may move for dismissal of an action for failure to join a necessary party pursuant to Federal Rule of Civil Procedure 19 (" Rule 19"). Fed. R. Civ. P. 12(b)(7). Courts employ a two-step approach to establish whether an action should be dismissed pursuant to Rule 12(b)(7). See United States v. San Juan Bay Marina, 239 F.3d 400, 405 (1st Cir. 2001) ; Fed. R. Civ. P. 19. First, a court examines "whether the [party] fits the definition of those who should 'be joined if feasible' under [R]ule 19(a)." Cruz-Gascot v. HIMA-San Pablo Hosp. Bayamón, 728 F.Supp.2d 14, 26 (D.P.R. 2010) (Besosa, J.). Second, a court ascertains whether joinder is feasible. Id. at 27.
IV. Standing
The defendants argue that the plaintiffs do not have standing to raise their claims in federal court. (Docket No. 55 at pp. 14-16; Docket No. 85 at pp. 16-22.) The defendants invoke Rule 12(b)(1) to dismiss the amended complaint for lack of jurisdiction. Id.
A. Legal Standard
"The Constitution limits the judicial power of the federal courts to actual cases and controversies." Katz, 672 F.3d at 71 (citing U.S. Const. art. III, § 2, cl. 1 ). "A case or controversy exists only when the party soliciting federal court jurisdiction ... demonstrates 'such a personal stake in the outcome of the controversy as to assure that concrete adverseness which sharpens the presentation of issues.' " Id. (quoting Baker v. Carr, 369 U.S. 186, 204, 82 S.Ct. 691, 7 L.Ed.2d 663 (1962) ). A "personal stake" in the outcome of the case or controversy is otherwise known as "standing." See id."If a plaintiff lacks standing to bring a matter before a court, the court lacks jurisdiction to decide the merits of the underlying case." Libertad v. Welch, 53 F.3d 428, 436 (1st Cir. 1995) (citation omitted).
To establish standing, a plaintiff must demonstrate three elements: "[f]irst, the plaintiff must have suffered an injury in fact," "[s]econd, there must be a causal connection between the injury and the conduct complained of," and "[t]hird, it must be likely, as opposed to merely speculative, that the injury will be redressed by a favorable decision." Lujan v. Defs. of Wildlife, 504 U.S. 555, 560-61, 112 S.Ct. 2130, 119 L.Ed.2d 351 (1992) (citations omitted). "The party invoking federal jurisdiction bears the burden of establishing these elements." Id. at 561, 112 S.Ct. 2130. "[E]ach element must be supported in the same way as any other matter on which the *241plaintiff bears the burden of proof, i.e., with the manner and degree of evidence required at the successive stages of the litigation." Id. 3
A plaintiff must demonstrate a "sufficiently direct causal connection between the challenged action and the identified harm." Katz, 672 F.3d at 71 (citing Lujan, 504 U.S. at 560, 112 S.Ct. 2130 ). While "this causal connection cannot be overly attenuated," Donahue v. City of Boston, 304 F.3d 110, 115 (1st Cir. 2002) (citation omitted), "a plaintiff need not allege that the defendant's conduct was the proximate cause of the plaintiff's injuries." Connor B. ex rel. Vigurs v. Patrick, 771 F.Supp.2d 142, 152 (D. Mass. 2011) (citations omitted). A plaintiff must "merely [show] that the injury was 'fairly traceable' to the challenged action of the defendant." Vigurs, 771 F.Supp.2d at 152 (quoting Lujan, 504 U.S. at 590, 112 S.Ct. 2130 ); see Focus on the Family v. Pinellas Suncoast Transit Auth., 344 F.3d 1263, 1273 (11th Cir. 2003) ("[E]ven harms that flow indirectly from the action in question can be said to be 'fairly traceable' to that action for standing purposes."). When "a plaintiff's asserted injury arises from the government's allegedly unlawful regulation (or lack of regulation) of someone else .... causation and redressability ordinarily hinge on the response of the regulated (or regulable) third party to the government action or inaction-and perhaps on the response of others as well." Lujan, 504 U.S. at 562, 112 S.Ct. 2130 (alterations in original). A sufficient causal connection may thus be established even if a plaintiff is not "the object of the government action or inaction." Id. (citations omitted).
B. Discussion
The plaintiffs establish an adequate "casual connection between the challenged action and the identified harm" because the enhanced security fees paid by the plaintiffs are "fairly traceable" to the defendants. See Katz, 672 F.3d at 71 (citing Lujan, 504 U.S. at 560, 112 S.Ct. 2130 ); Vigurs, 771 F.Supp.2d at 152. The defendants argue that the plaintiffs have not demonstrated the causal connection required to establish the plaintiffs' standing because the plaintiffs' alleged injuries are "not fairly traceable to Defendants." Docket No. 55 at p. 15; see Docket No. 85 at pp. 17-22.4 The defendants, however, imposed *242enhanced security fees on ocean freight carriers, and the ocean freight carriers collected those fees from the plaintiffs. (Docket No. 19 at p. 11.) Causality may be established when a plaintiff is not the direct "object of the government action," Lujan, 504 U.S. at 562, 112 S.Ct. 2130 (citations omitted), because "even harms that flow indirectly from the action in question can be said to be 'fairly traceable' to that action for standing purposes." Focus on the Family, 344 F.3d at 1273. At minimum, the plaintiffs were allegedly injured indirectly by the government regulation. The plaintiffs' alleged injuries are "fairly traceable" to the defendants. See id.; Warth v. Seldin, 422 U.S. 490, 510, 95 S.Ct. 2197, 45 L.Ed.2d 343 (1975) ("[E]nforcement of the challenged [governmental] restriction against the [vendor] would result indirectly in the violation of third parties' rights."); In re Pharm. Indus. Average Wholesale Price Litig. v. Abbott Labs., 339 F.Supp.2d 165, 172 (D. Mass. 2004) (finding that plaintiffs had standing because they were "indirectly harmed" by the government regulations); see also Sprint Commc'n Co. v. APCC Servs., Inc., 554 U.S. 269, 290, 128 S.Ct. 2531, 171 L.Ed.2d 424 (2008) ("[T]he payphone operators assigned to the aggregators all rights, title and interest in claims based on those injuries.... The aggregators, in other words, are asserting first-party, not third-party, legal rights.").
Because the plaintiffs' alleged injuries are concrete, particularized, and actual, see Lujan, 504 U.S. at 560, 112 S.Ct. 2130, "fairly traceable" to the defendants, see Vigurs, 771 F.Supp.2d at 152, and "likely" to be redressed by the Court through monetary award, see Johanns, 486 F.Supp.2d at 116, the plaintiffs have standing to bring this action.
V. Absolute Sovereign Immunity
PRPA contends that it is entitled to absolute sovereign immunity from this action pursuant to the Eleventh Amendment of the United States Constitution. (Docket No. 85 at pp. 6-16.)
Sovereign immunity "bars" private parties from "adjudicating claims ... against a nonconsenting State." Fed. Mar. Comm'n v. S.C. Ports Auth., 535 U.S. 743, 760, 122 S.Ct. 1864, 152 L.Ed.2d 962 (2002). The Eleventh Amendment provides sovereign immunity for "the states themselves and entities that are determined to be arms of a state." Pastrana-Torres v. Corporación de P.R. para la Difusión Pública, 460 F.3d 124, 126 (1st Cir. 2006) (citation omitted).5 An entity that invokes *243sovereign immunity "bears the burden of showing that it is an arm of the state." Wojcik v. Mass. St. Lottery Comm'n, 300 F.3d 92, 99 (1st Cir. 2002) (citation omitted).
The First Circuit Court of Appeals applies a two-step inquiry to determine whether an entity is an arm of the state. Grajales v. P.R. Ports Auth., 831 F.3d 11, 17 (1st Cir. 2016) (citing Fresenius Med. Care Cardiovascular Res., Inc. v. P.R. & Caribbean Cardiovascular Ctr. Corp., 322 F.3d 56, 65 (1st Cir. 2003) ). The first step " 'pays deference to the state's dignitary interest in extending or withholding Eleventh Amendment immunity from an entity' by examining 'how the state has structured the entity.' " Id. (quoting Fresenius, 322 F.3d at 65 ). A court considers a "broad range of structural indicators," such as "how state law characterizes the entity, the nature of the functions performed by the entity, the entity's overall fiscal relationship to the [state]," and "how much control the state exercises over the operations of the entity." Id. at 17-18 (internal citations omitted). "[I]f the analysis of these structural indicators reveals that 'the state clearly structured the entity to share its sovereignty,' then the entity is an arm of the state and the analysis is at an end." Id. at 18 (quoting Fresenius, 322 F.3d at 68 ).
"[I]f the structural indicators 'point in different directions,' " however, a court proceeds to the second step of the analysis concerning "the risk that the damages will be paid from the public treasury." Grajales, 831 F.3d at 18 (quoting Fresenius, 322 F.3d at 68 ). "At the second step ... '[the] analysis focuses on whether the state has legally or practically obligated itself to pay the entity's indebtedness' in the pending action." Id. (quoting Fresenius, 322 F.3d at 68 ). "If the state is so obligated, then the entity may claim the state's immunity." Id. (citing Fresenius, 322 F.3d at 65, 68 ).
PRPA fails to demonstrate that it is an arm of the state, and is not entitled to immunity from this action.
i. Puerto Rico's Intent in Structuring PRPA
The structural indicators "point in different directions" and do not indicate whether Puerto Rico "clearly structured" PRPA to be its arm. See Grajales, 831 F.3d at 18 (quoting Fresenius, 322 F.3d at 68 ). PRPA's enabling act "does not by its terms structure [PRPA] to be an arm of the state." See Fresenius, 322 F.3d at 68 ; see also Grajales, 831 F.3d at 21-22. According to PRPA's enabling act, PRPA is a "public corporation" with a "legal existence and personality separate and apart from those of the Government and any officials thereof." P.R. Laws Ann. tit. 23, § 333(a) -(b) (emphasis added). This language strongly suggests that PRPA is not an arm of the state. See Grajales, 831 F.3d at 21-22. "[W]hen Puerto Rico has chosen to make an entity an arm of the state, it has used other language." Fresenius, 322 F.3d at 68. For example, the Medical Services Administration, a "health care entity created by the Commonwealth, was 'created as an instrumentality of the Government of the Commonwealth of Puerto Rico, attached to the Commonwealth Department of Health ... under the direction and supervision of the Secretary of Health.' " Id. at 69-70 (quoting *244P.R. Laws Ann. tit 24, § 342(b) ); see Rodríguez Díaz v. Sierra Martínez, 717 F.Supp. 27, 29-31 (D.P.R. 1989) (Pieras, J.).6
PRPA's overall fiscal relationship with Puerto Rico displays a high degree of separation between the entity and the state, suggesting that PRPA is not an arm of the state. See Grajales, 831 F.3d at 25. Pursuant to PRPA's enabling act, PRPA's debts and obligations are "deemed to be those of [PRPA], and not those of the Commonwealth of Puerto Rico." P.R. Laws Ann. tit. 23, § 333(b) (emphasis added). Puerto Rico law requires PRPA to "develop strategies and take steps for financing and/or defraying any costs related to [port security]," and "the credit or power to levy taxes of the Commonwealth of Puerto Rico or of any of its political subdivisions shall not be pledged nor made liable for the payment of the principal of any loans, guarantees or bonds issued by any entity." P.R. Laws Ann. tit. 23, § 3223(a) -(b). PRPA thus "has the funding power to enable it to satisfy judgments without direct state participation or guarantees." See Grajales, 831 F.3d at 24 (internal quotation marks and citation omitted). Puerto Rico "generally has immunized itself from responsibility for [PRPA]'s acts or omissions, and the Commonwealth generally bears no legal liability for [PRPA]'s debts." Grajales, 831 F.3d at 25 (internal citations omitted).
"[T]he extent to which [Puerto Rico] exerts control over PRPA", however, weighs "rather strongly in favor of concluding that PRPA is an arm of the [state]." Grajales, 831 F.3d at 28. Puerto Rico "exercises a meaningful degree of control and supervision over PRPA." Id. (citing Royal Caribbean Corp. v. P.R. Ports Auth., 973 F.2d 8, 11-12 (1st Cir. 1992) ). "The governor retains formal control over PRPA through his power to appoint and remove a majority of PRPA's board members," and the state "appears to exert a great deal of control over PRPA in practice." Id. (citing Puerto Rico Ports Authority v. Fed. Mar. Comm'n, 531 F.3d 868, 877-78 (D.C. Cir. 2008) ).
Because the structural indicators "point in different directions," the Court proceeds to the second step of the analysis. See Grajales, 831 F.3d at 18 (quoting Fresenius, 322 F.3d at 68 ).
ii. Puerto Rico's Financial Obligation to PRPA
PRPA fails to demonstrate that this action poses any financial risk to the Commonwealth. PRPA does not contend that the Commonwealth would be liable for a judgment against PRPA in this case,7 nor is there any basis for the Court to conclude that the Puerto Rico Department of Treasury would pay for the damages in this action. See P.R. Laws Ann. tit. 23, § 333(b) ; Grajales, 831 F.3d at 29. "PRPA [was designed] to raise enough revenue to shoulder its own costs, including its litigation costs, and to bear its own debts, including (generally) any judgments against it." Grajales, 831 F.3d at 29 (alteration in original). Pursuant to the "Memorandum of Understanding" between PRPA and the Puerto Rico Department of Treasury:
Each of the parties waives its right to recover from the other, fully and irrevocably releasing the other ... from any *245and all claims, causes of action, loss, liability, of any nature whatsoever ... in connection with the either party alleged negligent performance of its obligations under this Memorandum of Understanding and Agreement.
(Docket No. 19 at pp. 95-96.)
Because the Commonwealth would not be liable for a judgment against PRPA in this action, PRPA is not entitled to immunity from this case. Consequently, the Court DENIES PRPA's absolute immunity defense (Docket No. 85).
VI. Section 1983 Claims
The plaintiffs assert four claims pursuant to section 1983. (Docket No. 19 at pp. 21-22.) The plaintiffs allege Commerce Clause, takings, procedural due process, and substantive due process violations. Id. The defendants move to dismiss the plaintiffs' section 1983 claims pursuant to Rule 12(b)(6). (Docket No. 55 at pp. 16-17, 21; Docket No. 85 at pp. 22-26.)
Section 1983 is not itself a source of substantive rights, but rather it "renders persons acting under color of state law liable for constitutional and federal-law violations." Costas Elena v. Municipality of San Juan, 677 F.3d 1, 6 (1st Cir. 2012) ; see Graham v. Connor, 490 U.S. 386, 393, 109 S.Ct. 1865, 104 L.Ed.2d 443 (1989).8 In order to establish a section 1983 claim, a plaintiff must adequately allege that he or she was deprived of a federally secured right and that the challenged conduct transpired "under color of state law." See Santiago v. Puerto Rico, 655 F.3d 61, 68 (1st Cir. 2011).
"In distinguishing private action from state action, the general inquiry is whether 'a state actor's conduct occurs in the course of performing an actual or apparent duty of his office, or ... is such that the actor could not have behaved in that way but for the authority of his office.' " Zambrana-Marrero v. Suárez-Cruz, 172 F.3d 122, 125 (1st Cir. 1999) (citation omitted). A private entity may be deemed a state actor for the purpose of section 1983 if it:
assumes a traditional public function when performing the challenged conduct; or if the challenged conduct is coerced or significantly encouraged by the state; or if the state has "so far insinuated itself into a position of interdependence with the [private party] that it was a joint participant in [the challenged activity]."
Santiago v. Puerto Rico, 655 F.3d 61, 68 (1st Cir. 2011) (alterations in original) (quoting Estades-Negroni v. CPC Hosp. San Juan Capestrano, 412 F.3d 1, 5 (1st Cir. 2005) ).
A plaintiff must "plausibly plead ... a causal connection between the actor and the deprivation." Torres López v. García-Padilla, 209 F.Supp.3d 448, 455 (D.P.R. 2016) (Pérez-Giménez, J.) (citing Sánchez v. Pereira-Castillo, 590 F.3d 31 (1st Cir. 2009) ; 42 U.S.C. § 1983 ). A plaintiff must "establish the link between each particular defendant and the alleged violation of federal rights." Id. (citing González-Piña v. Rodríguez, 407 F.3d 425, 432 (1st Cir. 2005) ). "A plaintiff may do so by indicating any 'personal action or inaction [by the defendants] within the scope of [their] responsibilities that would make [them] personally answerable in damages under Section 1983." Id. (alterations in *246original) (citing Pinto v. Nettleship, 737 F.2d 130, 133 (1st Cir. 1984) ).
B. Fifth Amendment Takings Claim
i. Applicable Law
The Takings Clause of the Fifth Amendment "expressly requires compensation where [the] government takes private property 'for public use.' " Lingle v. Chevron U.S.A. Inc., 544 U.S. 528, 543, 125 S.Ct. 2074, 161 L.Ed.2d 876 (2005) (quoting U.S. Const. amend. V ). A plaintiff must demonstrate a "protected property interest" to establish a takings claim. See Santiago-Ramos v. Autoridad de Energía Eléctrica de P.R., 834 F.3d 103, 106 (1st Cir. 2016).
"The Supreme Court has recognized two types of takings: physical takings and regulatory takings." Asociación de Subscripción Conjunta del Seguro Responabilidad Obligatorio v. FloresGalarza, 484 F.3d 1, 28-29 (1st Cir. 2007) (citing Brown v. Legal Found. of Wash., 538 U.S. 216, 233, 123 S.Ct. 1406, 155 L.Ed.2d 376 (2003) ). "A physical taking occurs either when there is a condemnation or a physical appropriation of property." Philip Morris, Inc. v. Reilly, 312 F.3d 24, 33 (1st Cir. 2002). "A regulatory taking transpires when some significant restriction is placed upon an owner's use of his property for which 'justice and fairness' require that compensation be given." Id. (quoting Goldblatt v. Hempstead, 369 U.S. 590, 594, 82 S.Ct. 987, 8 L.Ed.2d 130 (1962) ).
"[T]he Supreme Court has identified 'two categories of regulatory action that generally will be deemed per se takings.' " Franklin Mem. Hosp. v. Harvey, 575 F.3d 121, 125 (1st Cir. 2009) (quoting Lingle, 544 U.S. at 538, 125 S.Ct. 2074 ). "First, where [the] government requires an owner to suffer a permanent physical invasion of her property-however minor-it must provide just compensation." Lingle, 544 U.S. at 538, 125 S.Ct. 2074. Second, "where the 'regulations completely deprive an owner of all economically beneficial us[e] of her property.' " Franklin Mem. Hosp., 575 F.3d at 125 (quoting Lingle, 544 U.S. at 538, 125 S.Ct. 2074 ) (alterations in original).
ii. Discussion
The plaintiffs fail to establish a Fifth Amendment takings claim. The plaintiffs contend that the defendants, "under color of law and authority, ... depriv[ed] Plaintiffs ... of their property in violation of their constitutional rights." (Docket No. 19 at pp. 15 and 23.) The plaintiffs, however, do not assert a "protected property interest." See Santiago-Ramos, 834 F.3d at 106. The plaintiffs forfeited their interest in the funds by voluntarily paying the enhanced security fees to the defendants. See id. at 107 ; see also Manistee Apartments, LLC v. City of Chicago, 844 F.3d 630, 633 (7th Cir. 2016) ("It is, of course, indisputable that the plaintiff had a cognizable property in the entirety of the amount it paid to the City of Chicago.... But, ... Manistee voluntarily paid this amount to the City, and voluntary payment is not a property deprivation."). "It is beyond dispute that ... user fees ... are not 'takings.' " Koontz v. St. Johns River Water Mgmt. Dist., 570 U.S. 595, 615, 133 S.Ct. 2586, 186 L.Ed.2d 697 (2013) (internal quotation marks) (citing cases).9
The plaintiffs also provide no information to support their takings claim. They do not allege "a condemnation or a physical *247appropriation of property," see Philip Morris, 312 F.3d at 33, nor do they claim that a government regulation "require[d] [them] to suffer a permanent physical invasion of [their] property," see Lingle, 544 U.S. at 538, 125 S.Ct. 2074, or that a government regulation " 'completely deprive[d] [them] of all economically beneficial us[e] of [their] property.' " See Franklin Mem. Hosp., 575 F.3d at 125. Indeed, there is no mention of "takings" in the amended complaint. See Docket No. 19.
Because the plaintiffs fail to plead sufficient factual matter to state a section 1983 Fifth Amendment takings claim, the Court GRANTS the defendants' motions to dismiss (Docket Nos. 55 and 85) with respect to the plaintiffs' takings claim. See Santiago, 655 F.3d at 68 ; Twombly, 550 U.S. at 570, 127 S.Ct. 1955.
C. Fourteenth Amendment Due Process Claim
Pursuant to the Fourteenth Amendment, a "[s]tate [shall not] deprive any person of life, liberty, or property, without due process of law." Fournier v. Reardon, 160 F.3d 754, 757 (1st Cir. 1998) (internal quotation marks omitted) (citing U.S. Const. amend. XIV ). "Due process claims may take either of two forms: procedural due process or substantive due process." Id. (internal quotation marks and citation omitted).
Procedural due process requires "fair procedure." Zinermon v. Burch, 494 U.S. 113, 125, 110 S.Ct. 975, 108 L.Ed.2d 100 (1990). "This right assures individuals who are threatened with the deprivation of a significant liberty or property interest by the state notice and an opportunity to be heard 'at a meaningful time and in a meaningful manner.' " Ford v. Bender, 768 F.3d 15, 24 (1st Cir. 2014) (quoting Armstrong v. Manzo, 380 U.S. 545, 552, 85 S.Ct. 1187, 14 L.Ed.2d 62 (1965) ). To establish a procedural due process claim pursuant to section 1983, a plaintiff must "(1) allege facts that show that the plaintiff has a property interest, as defined by state law, and (2) that the conduct complained of, committed under color of state law, has deprived the plaintiff of that property interest without constitutionally adequate procedures." Vélez-Herrero v. Guzman, 330 F.Supp.2d 62, 71 (D.P.R. 2004) (Fusté, J.) (citing PFZ Props., Inc. v. Rodríguez, 928 F.2d 28, 30 (1st Cir. 1991) ). "[T]he adequacy of the due process provided by the state is assessed by means of a balancing test that weighs the government's interest against the private interest affected, the risk of an erroneous deprivation, and the value of additional safeguards." Morales-Torres v. Santiago-Díaz, 338 F.Supp.2d 283, 292 (D.P.R. 2004) (Fusté, J.) (citing Mathews v. Eldridge, 424 U.S. 319, 335, 96 S.Ct. 893, 47 L.Ed.2d 18 (1976) ).
"Substantive due process ... imposes limits on what a state may do regardless of what procedural protection is provided." Fournier, 160 F.3d at 757 (citations omitted). Substantive due process "affords only those protections 'so rooted in the traditions and conscience of our people as to be ranked as fundamental.' " Michael H. v. Gerald D., 491 U.S. 110, 122, 109 S.Ct. 2333, 105 L.Ed.2d 91 (1989) (quoting Snyder v. Massachusetts, 291 U.S. 97, 105, 54 S.Ct. 330, 78 L.Ed. 674 (1934) ). "Not every property interest is entitled to the protection of substantive due process." Coyne v. City of Somerville, 770 F.Supp. 740, 747 (D. Mass. 1991) ; see Bd. of Regents v. Roth, 408 U.S. 564, 577, 92 S.Ct. 2701, 33 L.Ed.2d 548 (1972). A successful substantive due process claim must have "significant resemblance to those interests previously viewed as fundamental by the Constitution," and not be "a *248right weaved from the cloth of state law." Id.
"While a property interest created under state law will receive the protections of procedural due process, only those property rights derived under the Constitution receive the protections of substantive due process." Coyne, 770 F.Supp. at 747 (citing Regents of Univ. of Mich. v. Ewing, 474 U.S. 214, 229, 106 S.Ct. 507, 88 L.Ed.2d 523 (1985) (Powell, J., concurring) ). Substantive due process does not protect "indirect state action having only an incidental effect" on one's protected liberty or property interest. Pittsley v. Warish, 927 F.2d 3, 8 (1st Cir. 1991), abrogated on other grounds, Martínez v. Cui, 608 F.3d 54 (1st Cir. 2010). Nor does substantive due process protect "the failure of the government and its officials to abide by their contract[s]." Charles v. Baesler, 910 F.2d 1349, 1353 (6th Cir. 1990).
The plaintiffs fail to assert sufficient factual allegations to state procedural or substantive due process claims pursuant to section 1983. See Santiago-Ramos, 834 F.3d at 107 ; Vélez-Herrero, 330 F.Supp.2d at 71 (citing PFZ Props., Inc., 928 F.2d at 30 ); Twombly, 550 U.S. at 570, 127 S.Ct. 1955 ; Ocasio-Hernández, 640 F.3d at 13. The demonstration of a protected property interest is fundamental to procedural and substantive due process claims. See Ford, 768 F.3d at 24 ; Coyne, 770 F.Supp. at 747. The plaintiffs do not establish a valid property interest.10 Accordingly, the Court GRANTS the defendants' motions to dismiss (Docket Nos. 55 and 85) with respect to the plaintiffs' procedural and substantive due process claims.
D. Commerce Clause Claim
The Commerce Clause "precludes States 'from discriminat[ing] between transactions on the basis of some interstate element' [ ] and inhibits 'economic protectionism' between the states." Trailer Bridge, 797 F.3d at 144 (citing Comptroller of Treasury of Md. v. Wynne, --- U.S. ----, 135 S.Ct. 1787, 1794, 191 L.Ed.2d 813 (2015) ; New Energy Co. of Ind. v. Limbach, 486 U.S. 269, 273-74, 108 S.Ct. 1803, 100 L.Ed.2d 302 (1988) ). User fees are constitutional if they are: (1) "based on some fair approximation of use of the facilities," (2) "not excessive in relation to the benefits conferred," and (3) "do[ ] not discriminate against interstate commerce." Northwest Airlines, Inc. v. County of Kent, 510 U.S. 355, 369, 114 S.Ct. 855, 127 L.Ed.2d 183 (1994) (citing Evansville-Vanderburgh Airport Auth. Dist. v. Delta Airlines, Inc., 405 U.S. 707, 716-17, 92 S.Ct. 1349, 31 L.Ed.2d 620 (1972) ). "Those challenging the government action carry the burden of persuasion." Trailer Bridge, 797 F.3d at 145 (citation omitted).
First, to determine whether a user fee "is based on some fair approximation of use of the facilities," a court asks "whether the government is charging each individual entity a fee that is reasonably proportional to the entity's use, and whether the government has reasonably drawn a line between those it is charging and those it is not." Trailer Bridge, 797 F.3d at 145 (citing Northwest Airlines, 510 U.S. at 368-69, 114 S.Ct. 855 ). Second, a court compares the fee with the "costs incurred in connection with ... [the] facilities" to determine whether the fee is "excessive in *249relation to the benefits conferred." Id. at 146 (citing Northwest Airlines, 510 U.S. at 369, 114 S.Ct. 855 ); Am. Airlines, Inc. v. Mass. Port Auth., 560 F.2d 1036, 1038 (1st Cir. 1977). "A fee is unconstitutional only insofar as it is 'excessive in relation to the costs incurred by the taxing authorities.' " Trailer Bridge, 797 F.3d at 146 (quoting Evansville, 405 U.S. at 719, 92 S.Ct. 1349 ).
Finally, a court considers "whether the regulation discriminates against interstate commerce." Trailer Bridge, 797 F.3d at 145 (citing Evansville, 405 U.S. at 719, 92 S.Ct. 1349 ). "Where we have a facially neutral regulation, ... the law 'will be upheld unless the burden imposed on such commerce is clearly excessive in relation to the putative local benefits.' " Id. (quoting Pike v. Bruce Church, Inc., 397 U.S. 137, 142, 90 S.Ct. 844, 25 L.Ed.2d 174 (1970) ). "[A] party cannot satisfy its burden simply by showing that a government action affects an out-of-state company or manufacturer." Id. (citing Exxon Corp. v. Governor of Md., 437 U.S. 117, 126, 98 S.Ct. 2207, 57 L.Ed.2d 91 (1978) ). "Instead, the evidence must illustrate that the government action interferes with interstate commerce by, for example, dissuading competition from out-of-state corporations." Id. (citing Family Winemakers of Cal. v. Jenkins, 592 F.3d 1, 10-11 (1st Cir. 2010) ).
The plaintiffs assert sufficient factual matter to state a Commerce Clause claim that is plausible on its face. See Northwest Airlines, 510 U.S. at 369, 114 S.Ct. 855 (citing Evansville, 405 U.S. at 716-17, 92 S.Ct. 1349 ); Twombly, 550 U.S. at 570, 127 S.Ct. 1955. The plaintiffs contend that the enhanced security fees are unconstitutional user fees. (Docket No. 19 at p. 22.) According to the plaintiffs, the defendants collect enhanced security fees for "non-containerized cargo such as cars, ISO tanks, cargo on platforms, and other types of cargo which are imported without using shipping containers," as well as "cargo entering the Port of San Juan, through some marine terminals which do not have access to scanning stations," and "cargo ... that [is] not being scanned at all." Id. at pp. 13-15. Construing these allegations "liberally" and "indulg[ing] all reasonable inferences" in the plaintiffs' favor, see Katz, 672 F.3d at 70, it is plausible that the fees are "excessive in relation to the benefits conferred," "discriminat[ory] against interstate commerce," and not "based on some fair approximation of use of the facilities." See Northwest Airlines, 510 U.S. at 369, 114 S.Ct. 855 (citing Evansville, 405 U.S. at 716-17, 92 S.Ct. 1349 ).
The plaintiffs also allege that the defendants violate the Commerce Clause "under color of state law." Docket No. 19 at p. 21-22; see Santiago, 655 F.3d at 68. According to the plaintiffs, "PRPA ... purported to act under color of state law," and S2 and Rapiscan "were agents of PRPA and willful participants in a joint activity with PRPA and acted in concert pursuant to a custom or usage that had the appearance of the force of law." (Docket No. 19 at pp. 21-22.) No party disputes that the defendants are state actors for the purpose of section 1983.
S2 and Rapiscan's argument that the plaintiffs fail to allege a causal connection between S2, Rapiscan, and the Commerce Clause violation is unpersuasive. See Docket No. 55 at pp. 16-18. S2 and Rapiscan contend that the amended complaint "fails to allege that Rapiscan or S2 individually caused the ocean carriers to pass on their own [enhanced security fee] costs to shippers like Plaintiffs." Id. at p. 17. They argue that the amended complaint is "devoid of any factual allegations that Rapiscan or S2 individually imposed *250on or even collected any [enhanced security fees] from ocean carriers, let alone for cargo not scanned by them." Id.
The plaintiffs' allegations, however, are sufficient to "establish the link" between S2, Rapiscan, "and the alleged violation of federal rights." See Torres López, 209 F.Supp.3d at 455 (citing González-Piña, 407 F.3d at 432 ). The plaintiffs assert that Rapiscan agreed to "conduct all services of non-intrusive scanning of shipping containers entering Puerto Rico through the port of San Juan" and that "Rapiscan assigned all of its purported rights" pursuant to the agreement "to its wholly owned subsidiary and alter ego, S2." (Docket No. 19 at pp. 9-10.) According to the plaintiffs, S2 and Rapiscan "purposely forced ocean carriers and their agents into becoming the Defendants' Enhanced Security Fee [ ] collection agents" and "acted and/or continue to act ultra vires in collecting [ ] Enhanced Security Fees in connection with the cargo scanning program." Id. at pp. 11-13. The plaintiffs allege that S2 and Rapiscan "collected and derived economic benefit from the Enhanced Security Fees under color of law and authority, there by [sic] depriving Plaintiffs ... of their property in violation of their constitutional rights." Id. at p. 15. The plaintiffs thus indicate "action or inaction" by S2 and Rapiscan "within the scope of [their] responsibilities that would make [them] personally answerable in damages under Section 1983." Torres López, 209 F.Supp.3d at 455 (alterations in original) (citing Pinto, 737 F.2d at 133 ).
Because the plaintiffs adequately allege that the defendants violated the Commerce Clause, a federally secured right, and that the challenged conduct transpired "under color of state law," the plaintiffs assert a plausible claim pursuant to section 1983. See Docket No. 19 at pp. 21-23; Santiago, 655 F.3d at 68. Accordingly, the Court DENIES the defendants' motions to dismiss (Docket Nos. 55 and 85) with respect to the plaintiffs' section 1983 Commerce Clause claim.
VII. Statute of Limitations
PRPA raises an affirmative defense that the plaintiffs are time-barred from their section 1983 claims. (Docket No. 85 at pp. 22-23.)
A. Applicable Law
"Affirmative defenses, such as the statute of limitations, may be raised in a motion to dismiss under Federal Rule of Civil Procedure 12(b)(6), provided that 'the facts establishing the defense [are] clear 'on the face of the plaintiff's pleadings.' " Trans-Spec Truck Serv., Inc. v. Caterpillar, Inc., 524 F.3d 315, 320 (1st Cir. 2008) (alteration in original) (citation omitted). Dismissal is appropriate "[w]here the dates included in the complaint show that the limitations period has been exceeded and the complaint fails to 'sketch a factual predicate' that would warrant the application of either a different statute of limitations period or equitable estoppel." Id. (citation omitted).
Courts apply a one-year statute of limitations for section 1983 claims. González García v. P.R. Elec. Power Auth., 214 F.Supp.2d 194, 200 (D.P.R. 2002) (Fusté, J.) (citing Rivera-Ramos v. Román, 156 F.3d 276, 282 (1st Cir. 1998) ).11 The *251one-year statute of limitations "begins running one day after the date of accrual, which is the date plaintiff knew or had reason to know of the injury." Benítez-Pons v. Puerto Rico, 136 F.3d 54, 59 (1st Cir. 1998) ; see Serrano-Nova v. Banco Popular de P.R., Inc., 254 F.Supp.2d 251, 260 (D.P.R. 2003) (Domínguez, J.) ("A knowing plaintiff has an obligation to file promptly or lose his claim.").12 The date of accrual is determined by "identify[ing] the actual injury of which the plaintiff complains." Guzmán-Rivera v. Rivera-Cruz, 29 F.3d 3, 5 (1st Cir. 1994).
An exception to the one-year statute of limitations for section 1983 claims is the continuing violation doctrine. See González García, 214 F.Supp.2d at 201-02 (citing Provencher v. CVS Pharmacy, 145 F.3d 5, 13 (1st Cir. 1998) ).13 To establish that a continuing violation occurred, a plaintiff must first show that the "conduct [ ] [took] place 'over a series of days or perhaps years.' " Tobin v. Liberty Mut. Ins. Co., 553 F.3d 121, 130 (1st Cir. 2009) (quoting Nat'l R.R. Passenger Corp. v. Morgan, 536 U.S. 101, 117, 122 S.Ct. 2061, 153 L.Ed.2d 106 (2002) ). A plaintiff must then demonstrate "that an unlawful act occurred or that an illegal policy existed within the period prescribed by the statute [of limitations]." Ruiz Casillas v. Camacho Morales, No. 02-2640, 2004 WL 3622480, at *5 (D.P.R. Apr. 27, 2004) (Fusté, J.) (citing Johnson, 840 F.2d at 137 ), aff'd, 415 F.3d 127 (1st Cir. 2005).14
The plaintiffs' remaining section 1983 claim survives the defendants' statute of limitations defense because the continuing violation doctrine applies to the plaintiffs' action. See González García, 214 F.Supp.2d at 201-02. The plaintiffs allege that the defendants' unlawful conduct has "take[n] place 'over a series of ... years.' " See Tobin, 553 F.3d at 130 (quoting Morgan, 536 U.S. at 117, 122 S.Ct. 2061 ); Docket No. 19 at pp. 13-14 ("Defendants *252acted and/or continued to act ultra vires in collecting [ ] [ ]Enhanced Security Fees[ ] in connection with the cargo scanning program: [s]ince at least 2009."). The plaintiffs also allege that the "unlawful act occurred or that an illegal policy existed within the period prescribed by the statute [of limitations]." See Ruiz Casillas, 2004 WL 3622480, at *5 (citing Johnson, 840 F.2d at 137 ); Docket No. 19 at pp. 13-14. According to the plaintiffs, they "have sustained substantial and continuing economic losses" due to the defendants' conduct beginning from the scanning program's inception because the defendants have continued to collect enhanced security fees from the plaintiffs. (Docket No. 19 at pp. 14-15.) Because the plaintiffs' section 1983 claims involve a continuing violation and the unlawful conduct occurred within the period prescribed by the section 1983 statute of limitations, the plaintiffs' section 1983 claims are not time-barred. The Court DENIES PRPA's defense that this action is time-barred.
VIII. Qualified Sovereign Immunity
S2 and Rapiscan argue that they are entitled to qualified sovereign immunity from the plaintiffs' action. (Docket No. 55 at pp. 18-20.)
"Qualified immunity shields government officials performing discretionary functions from civil liability for money damages when their conduct does not violate 'clearly established' statutory or constitutional rights of which a reasonable person would have known." Nereida-González v. Tirado-Delgado, 990 F.2d 701, 704 (1st Cir. 1993) (citing Harlow v. Fitzgerald, 457 U.S. 800, 818, 102 S.Ct. 2727, 73 L.Ed.2d 396 (1982) ). "The primary purpose of providing officials with qualified immunity is to ensure that fear of personal liability will not unduly influence or inhibit their performance of public duties." Id. at 704-05 (citing Anderson v. Creighton, 483 U.S. 635, 638, 107 S.Ct. 3034, 97 L.Ed.2d 523 (1987) ; Harlow, 457 U.S. at 814, 102 S.Ct. 2727 ; Carlson v. Green, 446 U.S. 14, 21 n.7, 100 S.Ct. 1468, 64 L.Ed.2d 15 (1980) ). Qualified immunity thus "confers immunity only from individual-capacity suits ... against government actors." Id. at 705.
S2 and Rapiscan's argument that they are entitled to qualified immunity is unavailing because they are not "government officials." See Nereida-González, 990 F.2d at 704. S2 is a "limited liability company created and organized under the laws of the Commonwealth of Puerto Rico." (Docket No. 19 at pp. 8-9.) Rapiscan is a "corporation created and organized under the laws of the State of California." Id. at p. 9. Although the First Circuit Court of Appeals has not determined whether private limited liability companies and corporations are "government officials" for the purpose of qualified immunity, this Court adopts the Sixth Circuit Court of Appeals' position that "private corporations are not public officials; and thus, not entitled to qualified immunity." See Hammons v. Norfolk S. Corp., 156 F.3d 701, 706 n.9 (6th Cir. 1998) (citation omitted), abrogated on other grounds, Corr. Servs. Corp. v. Malesko, 534 U.S. 61, 122 S.Ct. 515, 151 L.Ed.2d 456 (2001).15
*253Qualified immunity is available to government agents and officers in their individual capacities to provide assurance that "they will not be held personally liable as long as their actions are reasonable in light of current American law." See Anderson, 483 U.S. at 646, 107 S.Ct. 3034 (emphasis added). The law affords this protection to individual people, inquiring what a "reasonable person " in the defendant's position "would have known" about statutory and constitutional rights. Nereida-González, 990 F.2d at 704 (emphasis added) (citing Harlow, 457 U.S. at 818, 102 S.Ct. 2727 ); see Anderson, 483 U.S. at 638-39, 107 S.Ct. 3034. S2 and Rapiscan are not individual people, and therefore not government "officials," for the purpose of this analysis. Cf. Nereida-González, 990 F.2d at 704. Because S2 and Rapiscan are not "government officials," they are not entitled to qualified immunity. Consequently, the Court DENIES S2 and Rapiscan's qualified immunity defense (Docket No. 55).
IX. Necessary Joinder
PRPA moves to dismiss the plaintiffs' claims pursuant to Rule 12(b)(7) for failure to join a necessary party pursuant Rule 19. (Docket No. 85 at pp. 29-32.)
" Rule 19 addresses situations where a lawsuit is proceeding without a party whose interests are central to the suit." Bacardí Int'l Ltd. v. V. Suárez & Co., 719 F.3d 1, 9 (1st Cir. 2013) (citing Picciotto v. Continental Cas. Co., 512 F.3d 9, 15 (1st Cir. 2008) ). "The Rule provides joinder of required parties when feasible, and for dismissal of suits when joinder of a required party is not feasible and that party is indispensable." Id. (citing Fed. R. Civ. P. 19(a)-(b) ). "The Rule calls for courts to make pragmatic, practical judgments that are heavily influenced by the facts of each case." Id. (citing Picciotto, 512 F.3d at 14-15 ). "In a Rule 19 analysis, a court must first determine if an absent party is a 'required party' under Rule 19(a)." Id. at 10 (citing Picciotto, 512 F.3d at 16 ). A party is "required" if:
in that person's absence, the court cannot accord complete relief among existing parties; or [ ] that person claims an interest relating to the subject of the action and is so situated that disposing of the action in the person's absence may: (i) as a practical matter impair or impede the person's ability to protect the interest; or (ii) leave an existing party subject to a substantial risk of incurring double, multiple, or otherwise inconsistent obligations because of the interest.
Fed. R. Civ. P. 19(a).
If joinder of a required party "is not feasible," but the party is "so indispensable that the suit must not be litigated without them," the case should be dismissed pursuant to Rule 19(b). Picciotto, 512 F.3d at 15 (internal quotation marks omitted) (citing Fed. R. Civ. P. 19(b) ). To determine whether a case should be dismissed for the failure to join an indispensable party, a court evaluates:
the extent to which a judgment rendered in the person's absence might prejudice that person or the existing parties; [ ] the extent to which any prejudice could be lessened or avoided by: (A) protective provisions in the judgment; (B) shaping the relief; or (C) other measures; [ ] whether a judgment rendered in the person's absence would be adequate; and [ ] whether the plaintiff *254would have an adequate remedy if the action were dismissed for nonjoinder.
Fed. R. Civ. P. 19(b). A court also considers the policies underlying Rule 19, "including the public interest in preventing multiple and repetitive litigation, the interest of the present parties in obtaining complete and effective relief in a single action, and the interest of absentees in avoiding the possible prejudicial effect of deciding the case without them." Picciotto, 512 F.3d at 15-16 (internal quotation marks and citations omitted).
PRPA's argument that the ocean carriers are indispensable parties is unavailing. See Docket No. 85 at 29-32. PRPA contends that "the essence of Plaintiffs' complaint is to recover the amounts of [enhanced security fees] allegedly paid by them." Id. at p. 30. PRPA argues that the plaintiffs paid the ocean carriers, who "[u]nder Plaintiffs' theory ... presumably[ ] pass[ed] on an operating/administrative charge ... to PRPA." Id."Yet, any amounts paid by Plaintiffs to the Ocean Carriers are exclusively part of contractual negotiations between them." Id. PRPA claims that "PRPA cannot return Plaintiffs any money it did not collect from them in the first place." Id.
The plaintiffs, however, allege that they "have sustained substantial and continuing economic losses ... reasonably believed to be in excess of $150,000,000.00" in enhanced security fees and that the defendants "collected and derived economic benefit from the Enhanced Security Fees." (Docket No. 19 at p. 15.) There is no reason why the Court cannot "accord complete relief" among the existing parties in the absence of the ocean carriers. See Bacardí, 719 F.3d at 10 (quoting Fed. R. Civ. P. 19(a) ). Nor do the ocean carriers "claim[ ] an interest relating to the subject of the action." See id. Because complete relief can be afforded between the existing parties and the ocean carriers do not claim an interest in the case, the Court rejects PRPA's contentions regarding necessary joinder.
X. Puerto Rico Law Claims
The defendants contest the plaintiffs' Puerto Rico law claims for unjust enrichment and undue collection. (Docket No. 55 at pp. 25-26; Docket No. 85 at pp. 26-29.)
A. Unjust Enrichment
The plaintiffs assert an unjust enrichment claim against the defendants. (Docket No. 19 at pp. 23-25.) Pursuant to Puerto Rico law:
When there is no statute applicable to the case at issue, the court shall decide in accordance with equity, which means that natural justice, as embodied in the general principles of jurisprudence and in accepted and established usages and customs, shall be taken into consideration.
P.R. Laws Ann. tit. 31, § 7 ; see also P.R. Laws Ann. tit. 31, § 2992 ("Obligations are created by law, by contracts, by quasi contracts, and by illicit acts and omissions or by those in which any kind of fault or negligence occurs."). A Puerto Rico claim for unjust enrichment consists of five elements: "(1) existence of enrichment; (2) a correlative loss; (3) nexus between loss and enrichment; (4) lack of cause for enrichment; and (5) absence of a legal precept excluding application of enrichment without cause." Montalvo v. LT's Benjamin Records, Inc., 56 F.Supp.3d 121, 136 (D.P.R. 2014) (Gelpí, J.) (quoting Hatton v. Municipality of Ponce, 134 D.P.R. 1001 (P.R. 1994) ). "[I]t is well-settled under Puerto Rico law that the undue enrichment doctrine is not applicable where ... there is a legal precept (e.g., a binding *255agreement) that excludes the application of such doctrine." P.R. Tel. Co. v. Sprintcom, Inc., 662 F.3d 74, 97 (1st Cir. 2011) (alteration in original).
The plaintiffs allege sufficient factual matter to establish an unjust enrichment claim pursuant to Puerto Rico law. SeeMontalvo, 56 F.Supp.3d at 136-37. The plaintiffs claim:
(1) Defendants have enriched themselves by collecting Enhanced Security Fees from Plaintiffs, (2) Plaintiffs ... have lost money by paying the fees collected by Defendants, (3) there is a direct relation between Plaintiffs' economic losses and Defendants' enrichment, (4) there is no valid cause for the enrichment due to the illegality of the Enhanced Security Fee since it first started, or in the alternative, since July 1, 2014, when regulation 8067 expired; or in the alternative for cargo that was not scanned or in the further alternative for cargo that was imported through a terminal that did not have scanning facilities[,] and (5) there is no legal precept that would exclude the application of enrichment without cause.
(Docket No. 19 at pp. 24-25.) Construed liberally, the amended complaint alleges adequate facts to "raise a right to relief above the speculative level" against the defendants. See Twombly, 550 U.S. at 555, 127 S.Ct. 1955 ; Aversa, 99 F.3d at 1210 ; see also Ocasio-Hernández, 640 F.3d at 13 (holding that a claim may still proceed even if "recovery is very remote and unlikely"). Accordingly, the Court DENIES the defendants' motions to dismiss (Docket Nos. 55 and 85) with respect to the plaintiffs' unjust enrichment claim.
B. Undue Collection
The plaintiffs assert an undue collection claim against the defendants. (Docket No. 19 at pp. 25-27.) Pursuant to Article 1795, "[i]f a thing is received when there was no right to claim it and which, through an error, has been unduly delivered, there arises an obligation to restore the same." P.R. Laws Ann. tit. 31, § 5121.16 The plaintiffs allege that they "paid the Enhanced Security Fees with the intent of extinguishing the obligation imposed by Defendants." (Docket No. 19 at p. 26.) According to the plaintiffs,
Because PRPA had no delegated legal authority to inspect cargo and enter the PRPA/Rapiscan Agreement, and/or because the PRPA/Rapiscan Agreement was annulled when assigned to S2 [ ], and/or because Regulation 8067 expired on June 30, 2014, and/or because fees were charged for cargo that was not scanned and/or for cargo imported through terminals that had no scanning facility; Plaintiffs aver that they made those payments by error because they [were] wrongfully induced to believe *256that these Defendants were lawfully collecting the challenged fees.
Id. at p. 26. The plaintiffs allege sufficient facts to "raise a right to relief above the speculative level" against the defendants for undue collection. See Twombly, 550 U.S. at 555, 127 S.Ct. 1955 ; Aversa, 99 F.3d at 1210 ; see also Ocasio-Hernández, 640 F.3d at 13 (holding that a claim may still proceed even if "recovery is very remote and unlikely"). Accordingly, the Court DENIES the defendants' motions to dismiss (Docket Nos. 55 and 85) with respect to the plaintiffs' undue collection claim.
XI. Conclusion
For the reasons set forth above, the defendants' motions to dismiss are GRANTED in part and DENIED in part. They are GRANTED with respect to the plaintiffs' Fifth Amendment and Fourteenth Amendment section 1983 claims, and DENIED regarding the plaintiffs' Commerce Clause section 1983 claim and Puerto Rico law claims (Docket Nos. 55 and 85). Consequently, the plaintiffs' takings, procedural due process, and substantive due process claims pursuant to section 1983 are DISMISSED WITH PREJUDICE (Docket No. 19). There being no just reason for delay, partial judgment shall be entered accordingly. The defendants' motion to stay discovery pending the ruling on these motions is MOOT (Docket No. 89).
IT IS SO ORDERED.