EASTERLY, Associate Judge:
The District of Columbia’s Freedom of Information Act generally requires public bodies, including the Council of the District of Columbia, to provide “full and complete information” in response to requests for documents from members of the public. D.C.Code §§ 2-531, -532(a) (2015 Supp.). But D.C. FOIA also includes a number of exemptions, which allow public bodies to withhold certain information from disclosure. See D.C.Code § 2-534 (2015 Supp.) (listing exemptions). One of those exemptions allows public bodies to withhold information that is specifically exempted from disclosure by another statute. See D.C.Code § 2-534(a)(6).
In this case, we decide whether the Council of the District of Columbia can withhold documents from Kirby Vining under this exemption by invoking the Legislative Privilege Act, D.C.Code § 1-301.42 (2014 Repl.) (“For any speech or debate made in the course of their legislative duties, the members of the Council shall not be questioned in any other place.”). For the reasons set forth below, we conclude it cannot. Accordingly, we reverse the entry of summary judgment for the Council and remand for further proceedings consistent with this opinion.
I. Facts and Procedural History
Kirby Vining submitted a request under D.C. FOIÁ to the Council of the District of Columbia asking for documents related to a proposed development of McMillan Park.1. The Council acknowledged it was [441]*441subject to D.C. FOIA and provided a number of responsive documents. But with respect to 149 documents listed in its Vaughn index,2 the Council asserted that at least one of two D.C. FOIA exemptions applied: D.C.Code §.,2-5,34(a)(4) (“Exemption 4”) (shielding from disclosure “[i]nter-agency or intra-agency memorandums or letters, ... which would not be available by law to a party other than a public body in litigation with the public body”) and D.C.Code § 2-534(a)(6) (“Exemption 6”) (shielding ‘.‘[Information specifically exempted from disclosure by statute”).3 Beyond citing the statute, the Council did not elaborate on the nature of the. exemptions asserted.
■ Mr. Vining filed suit in Superior Court, challenging the Council’s decision to withhold these documents.4 The Council moved for summary judgment, arguing that “[t]he majority of documents withheld by the Council ... are covered by [the Legislative Privilege' Act] and therefore are not required to be disclosed under the D.C. FOIA” and that “[t]he remaining documents are covered by the deliberative-process privilege.” Th.e Council asserted without explanation that the Legislative Privilege Act was incorporated by both Exemptions 6 and 4 of D.C. FOIA;5 the Council additionally invoked the deliberative-process privilege under Exemption 4.
The Superior Court addressed the Council’s reliance on the Legislative Privilege Act and the deliberative-process privilege, upheld the Council’s refusal to provide these documents to Mr, Vining, and granted summary judgment to the Council.6 This appeal followed. Mr. Vining challenges the court’s determination that the Council could withhold documents under Exemption 6 by invoking the Legislative Privilege Act.
II. Analysis
A. Mootness
Preliminarily, we address the Council’s argument that this court need not address whether the Legislative Privilege Act allows the Council to withhold information under Exemption 6 of D.C. FOIA because this case is moot. The mootness doctrine generally prevents courts from deciding cases “when the is[442]*442sues presented are no longer ‘live’ or when the parties lack a legally cognizable interest in the outcome.” Fraternal Order of Police, Metro. Labor Comm. v. District of Columbia, 113 A.3d 195, 198 (D.C.2015) (brackets omitted) (quoting Settlemire v. District of Columbia Office of Emp. Appeals, 898 A.2d 902, 904-05 (D.C.2006)).7 The Council argues that Mr. Vining has no legally cognizable interest in ascertaining whether the Council properly withheld documents under Exemption 6 because the Superior Court determined that the Legislative Privilege Act allowed the Council to withhold documents under two FOIA exemptions, both Exemption 6 and Exemption 4, and Mr. Vining has only challenged the court’s ruling on the former. We disagree with the Council’s characterization of the Superior Court’s ruling and conclude that this case is not moot.
To begin with, the Council’s argument is at odds with its Vaughn index, which the trial court relied upon to determine whether the Council had properly withheld documents that were responsive to Mr. Vining’s FOIA request.8 In this index, the Council variously listed Exemptions 6 and 4 as justification for withholding documents — sometimes asserting the exemptions in tandem, but sometimes citing one or the other on its own. See supra note 3. If the Council, as it now represents, meant to invoke both Exemptions 6 and 4 to withhold documents under the Legislative Privilege Act, the Council would never have listed Exemption 6 alone. That it did so strongly suggests that, at least as to sixty documents, the Council was invoking the Legislative Privilege Act only under Exemption 6.
To be sure, the Council subsequently asserted in its summary judgment motion that the Legislative Privilege Act was incorporated by both FOIA exemptions. But beyond citing to D.C.Code § 2-534(e), which the Council had not cited in its Vaughn index, the Council never explained how this could be. And upon examination, the Council’s citation to § 2-534(e) makes little sense. Section 2-534(e) incorporates under Exemption 4 a list of already-existing common-law privileges as well as “other privileges that may be found by the court.” See supra note 5. It has no clear bearing on information protected by statute, which is separately addressed under Exemption 6.9 Thus, as we read the record, the Council never developed an argument that would have supported a ruling by the Superior Court that the Council had prop[443]*443erly withheld documents under the Legislative Privilege Act as incorporated by Exemption 4 as well as Exemption 6.
Unsurprisingly then, the Superior Court’s order does not clearly reflect that it examined this argument. To the contrary, instead of focusing on the particular FOIA exemptions serving as the foundations for the assertion of privilege, the court directed its attention to the nature of the privilege asserted. It first acknowledged the Council’s argument that “many of the documents requested are protected from Plaintiffs requests for disclosure” under the Legislative Privilege Act and upheld the application of that statute. The court then acknowledged the Council’s argument that a remaining “small number of documents” were protected by the deliberative-process privilege and upheld the assertion of that privilege.
To support its mootness argument on appeal, the Council plucks one sentence from the Superior Court’s order, where at the end of its discussion of the Legislative Privilege Act, the court concluded, “Having reviewed the Vaughn Index and the documents themselves, in camera, the Court finds that the Council properly applied the [Legislative Privilege Act] via [Exemptions 4 and 6, to the documents it withheld.” But this was the Superior Court’s sole reference to Exemption 4 in its discussion of the Legislative Privilege Act, and the court did not explain how the Council could assert this statutory privilege “via” both Exemption 4 and Exemption 6.10 Rather, the court’s preceding analysis focused exclusively on whether the Legislative Privilege Act met the requirements for a nondisclosure statute under Exemption 6, and so we understand that the Superior Court’s ruling was limited to a conclusion that the Legislative Procedure Act allowed the Council to withhold documents under this single exemption.
Accordingly, we conclude that Mr. Vin-ing’s challenge to the trial court’s ruling is not moot.
B. The Council’s Ability to Withhold Information under Exemption 6 of D.C. FOIA
1. Statutory Background
Before we begin our analysis to determine whether the Council properly withheld documents under Exemption 6 of D.C. FOIA, we put that analysis in context and review the pertinent statutes: the Legislative Privilege Act of 197511 and D.C. FOIA itself.
Soon after the United States Congress created the Council of the District of Columbia, the Council enacted the Legislative Privilege Act of 1975. The Legislative Privilege Act was modeled on the Speech or Debate Clause of the United States Constitution, which gives members of the U.S. Congress and their aides absolute immunity to suits for damages and [444]*444prospective relief whenever the suits are related to their legislative functions. See Eastland v. United States Servicemen’s Fund, 421 U.S. 491, 503, 95 S.Ct. 1813, 44 L.Ed.2d 324- (1975) (prospective relief); Tenney v. Brandhove, 341 U.S. 367, 372-74, 379, 71 S.Ct. 783, 95 L.Ed. 1019 (1951) (damages). The central purpose of the Speech or Debate Clause is to “preserve the constitutional structure of separate, coequal, and independent branches of government.” United States v. Gillock, 445 U.S. 360, 369, 100 S.Ct. 1185, 63 L.Ed.2d 454 (1980) (citing United States v, Helstoski, 442 U.S. 477, 491, 99 S.Ct. 2432, 61 L.Ed.2d 12 (1979)). When drafting the Legislative Privilege Act, the Council noted approvingly that the Speech or Debate Clause affords members of Congress “wide freedom of speech, debate and deliberation without intimidation from the Executive Branch,” and it protects them “against civil actions and criminal prosecutions that threaten to delay and disrupt the legislative process.” Committee on the Judiciary and Criminal Law, D.C. Council, Report on Bid 1-34 at 2 (Dec. 4, 1975). The Council indicated that its aim in drafting the Legislative Privilege Act was, “[similarly,” to give Councilmembers corresponding “immunities and freedoms ... in exercising their duties in the legislative sphere.” Id.
Currently codified at D.C.Code § 1-301.42, the Legislative Privilege Act provides that “[f]or any speech or debate made in the course of their legislative duties, the members of the Council shall not be questioned in any other place.” “Legislative duties” are broadly defined as “the responsibilities of each member of the Council in the exercise of such member’s functions as a legislative representative,” including “[e]verything said, written or. done during legislative sessions, meetings, or investigations of the Council or any committee of the Council, and everything said, written, or done in the process of drafting and publishing legislation and legislative reports.” D.C.Code § l-301.41(b) (2014 Repl,).
The year after the Council passed the Legislative Privilege Act, it passed the Freedom of Information Act of 1976, a sunshine law designed to promote open government. D.C. FOIA established that “the public policy of the District of Columbia is that all persons are entitled to full and complete information regarding the affairs of government and the official acts of those who represent them as public officials and employees.” Freedom of Information Act of 1976, D.C. Law 1-96, § 201 (1977) (current version at D.C.Code § 2-531).12 More concretely, D.C. FOIA gave the public access to “public record[s],” id. at § 202, i.e., “all books, papers, maps, photographs, cards, tapes, recordings, or other documentary materials regardless of physical form or characteristics prepared, owned, used, in the possession of, or retained by the Mayor and agencies,” id. at § 209 (incorporating the definitions from the D.C. Administrative Procedure Act) (current version at D.C.Code § 2-539(a) (2015 Supp.)); id. at § 3(d) (amending the DCAPA with this definition of “public record”) (current version at D.C.Code § 2-502(18)). • Although it authorized a number of exemptions from [445]*445disclosure, id. at § 204, D.C. FOIA explicitly directed that its provisions were to “be construed with the view toward expansion of public access,”-id at § 201.
As originally enacted, D.C. FOIA applied only to the executive branch.13 Id. at § 202 (providing access to “any public record of the Mayor or an agency”).. Nevertheless, it became “the practice of the Council to abide by the requirements of FOIA,” Committee on Government Operations, D.C. Council, Report on Bill 13-829 at 2 (Oct. 31, 2000). In 2000, the Council amended D.C. FOIA to codify this practice. Noting that “several states have decided to explicitly include the legislative branch under their state counterparts to FOIA,” and reasoning that “it is only fair for the Council to abide by the same rules as the executive branch with respect to public access to information,” the Council extended .D.C. FOIA to itself. Id.; see also Freedom of Information Amendment Act of 2000, D.C. Law 13-283 (2001).
2. D.C. FOIA’s Exemption 6 and the Legislative Privilege Act
Mr. Vining argues that the Council cannot withhold documents under Exemption 6 of D.C. FOIA by invoking the Legislative Privilege Act. The force of the Legislative Privilege Act, its interaction with FOIA, and ultimately the trial court’s determination that the Council was entitled to summary judgment are all questions of law that we review.de novo. See Fraternal Order of Police, Metro. Police, Labor Comm. v. District of Columbia, 79 A.3d at 353.
The Council, as a public body subject to D.C., FOIA, is required to provide “full and complete information” in response to requests for disclosure of public records unless it pan identify a. statutory exemption that authorizes it to withhold responsive information.14 D.C.Code §§ 2-531, -532. Here the Council invoked Exemption 6, which allows the Council and executive agencies of the District government to withhold from the public “[[Information .specifically exempted from disclosure by statute .,, provided that such statute” either leaves ho discretion on the issue or “[establishes particular criteria for withholding or refers to particular types of matters to be withheld.” D.C.Code § 2-534(a)(6). To promote D.C. FOIA’s open-government objective, we are required to interpret this exemption “narrowly,” “with-ambiguities resolved in favor of disclosure.” Fraternal Order of Police, Metro. Labor Comm. v. District of Columbia, 82 A.3d 803, 813 (D.C.2014) (quoting Fraternal Order of Police, Metro. Police Labor Comm. v. District of Columbia, 79 A.3d at 354). We conclude that the Legislative Privilege Act cannot be invoked through Exemption 6 so as to permit the Council to withhold documents responsive to a FOIA request.15
As noted above, a qualifying statute under Exemption 6 must “specifically exempt ]” information from disclosure. D.C.Code § 2-534(a)(6). This court,- like federal courts interpreting the analogous-[446]*446exemption under federal FOIA,16 has looked exclusively to the text of the proffered statute to determine whether it explicitly shields information from public view. See Barry v. Washington Post Co., 529 A.2d 319, 322 (D.C.1987) (per curiam).17 The text of the Legislative Privilege Act does not do this. To the contrary, it prohibits “questioning]” Councilmembers “in any other place” regarding “any speech or debate made in the course of their legislative duties.” D.C.Code § 1-301.42. Moreover, the statute’s broad definition of “legislative duties” incorporates public acts and statements: for example, draft legislation that is made available to the public, statements made by Councilmembers during open hearings, and published reports by Council committees. See D.C.Code § 1-301.41 (b).
Our conclusion that the Council cannot seek the protection of the Legislative Privilege Act under Exemption 6 is reinforced by our examination of D.C. FOIA as a whole. First, we note that the Council is entitled to claim other exemptions under D.C.Code § 2-534(a), including the exemption for “[[Investigatory records compiled for law-enforcement purposes,” D.C.Code § 2-534(a)(3) (“Exemption 3”) and the exemption for documents protected by the deliberative process and other common law privileges under D.C.Code § 2-534(a)(4). Indeed, the Council amended FOIA in 2004 precisely to tailor these exemptions to its needs — amending Exemption 3 so that it would encompass “the records of Council investigations,” and amending Exemption 4 so that it would include “memorandums or letters generated or received by the staff or members of the Council.”18 This would have been unnecessary had the Council already enjoyed broad protection under Exemption 6 from disclosing to a FOIA requester any information related to its legislative duties as defined by the Legislative Privilege Act.19
Second, we consider the fact that, as amended in 2000, D.C. FOIA requires the D.C. Council to fulfill its open-government objectives. To allow the Council to invoke the Legislative Privilege Act under Exemption 6 and withhold all information [447]*447related to its legislative activities would permit the Council to withhold swaths of public documents in direct conflict with FOIA’s open-government mission. We are not persuaded by the Council’s argument that a sliver of documents would still’fall outside Exemption 6;20 surely, this constricted scope of disclosure was not what the Council envisioned when it announced that it would “abide by the same rules as the executive branch with respect to public access to information.” Report on Bill 13-829 at 2.
Likewise, we are unmoved by the Council’s argument that it disclosed nearly one thousand documents to Mr. Vining, notwithstanding the protection the Council believed it could claim under the Legislative Privilege Act via Exemption 6. This argument suggests that the Council wants to retain unfettered administrative discretion to decide when to make disclosures under FOIA. But broad administrative discretion is exactly what the Council sought to remove from public bodies wlhen it first passed D.C. FOIA forty years ago,21 and broad administrative discretion is exactly what the Council surrendered when it chose to subject itself to FOIA.
We adhere to the text and spirit of D.C. FOIA and conclude that the Council may not duck its obligation to make full disclosures under the statute by invoking the Legislative Privilege Act under Exemption 6. In so holding, we reject the Council’s counterargument that the Legislative Privilege Act is some kind of super-statute that either trumps FOIA or must be broadly construed thereunder, consistent-with federal cases interpreting the Speech or Debate Clause of the Constitution, as a nondisclosure provision.
As explained above, we examine the Council’s decision to withhold documents through the lens of D.C. FOIA, and specifically through the lens of D.C. FOIA’s Exemption 6, which we must interpret narrowly and which requires tljat claimed withholding statutes explicitly exempt information from public disclosure. Cf Reporters Comm, for Freedom of Press, 816 F.2d at 734-35 (analyzing the analogous exemption under federal FOIA and explaining that courts must find a legislative “purpose to exempt matters from disclosure in the actual words of the statute (or at least in the legislative history of FOIA) — not in the legislative history of the claimed withholding statute, nor in an agency’s interpretation of the statute” (citation omitted)). But even if we read Exemption 6 expansively, we could not agree with the Council’s contention that the Legislative Privilege Act permits non-disclosure of the documents in this case.
The Legislative Privilege Act codified the Council’s desire to promote the separation of powers and to protect legislators from disruption and intimidation. See supra Part II.B.1. D.C. FOIA does not implicate either of these concerns. The Council chose to apply FOIA to itself, and the burden of FOIA compliance falls primarily on the Secretary to the Council22 and its [448]*448General Counsel,23 not on Coun'cilmembers and their aides, thereby minimizing any disruption to the' operation of the Council.24
The Council argues,’ however, that because federal courts have used the term “non-disclosure privilege” in discussions of the Speech or Debate Clause, see, e.g., Williams v. Johnson, 597 F.Supp.2d 107, 115 (D¡D,C.2009), this court must interpret the Legislative Privilege Act as a withholding statute — a “non-disclosure statute,” in the Council’s words — within the meaning of D.C.Code § 2 — 534(a)(6). Even assuming'that our Legislative Privilege Act is coextensive •■with the Speech or Debate Clause,25 federal decisions like Williams do not convince us that -the Legislative ■Privilege Act constitutes a withholding statute under D.C. FOIA Exemption 6. It is true that several federal courts have held that, under the Speech or Debate Clause, members of Congress may not be forced to submit to civil discovery,26 but these courts have never held that the Speech or Debate Clause constitutes a basis for withholding documents under the analogous exemption of federal FOIA, for the simple reason that federal FOIA does not apply to Congress, 5 U.S.C. § 551(1)(A) (2012)27 In other words, we [449]*449are confronted with an entirely different legal landscape — one in which the Council has chosen to accord itself a statutory privilege to protect itself, like Congress, from executive and judicial meddling but, unlike Congress, has also chosen to subject itself to an open-government law. The federal cases interpreting the Speech or Debate Clause simply dó not speak to this situation.
The Council warns, however, that a failure to recognize that it is protected by the Legislative Privilege Act under Exemption 6 of D.C. FOIA will “produce the absurd result of a litigant being able to obtain records through [D.C.] FOIA that the litigant could not obtain through [civil] discovery.” But it is not obvious that our ruling will lead to such a result or, if it does, that such a result would be absurd. As Councilmembers cannot be sued for conduct undertaken in their legislative capacities, Dorsey, 917 A.2d at 643, this end-run scenario could arise only if a litigant suing a third party sought to obtain information relevant to its suit from the Council via D.C. FOIA. In such a circumstance, the Council would be free to assert any relevant exemption from disclosure.28’ But if a particular document did not fall 'within any of FOIA’s exemptions, the Council would, under its open-government obligations, be required to disclose the document. There is nothing absurd about such a result. , Cf. NLRB v. Sears, Roebuck & Co., 421 U.S. 132, 143 n. 10, 95 S.Ct. 1504, 44 L.Ed.2d 29 (1975) (explaining .that a litigant’s rights under the federal FOIA were “neither increased nor decreased” because. the litigant claimed “an interest in the [information sought under the'Act]:greater'than that shared by the average member of the public”).
III. Conclusion
The force compelling the Council to disclose its records is none other than legislation drafted by the ■ Council itself. If the Council wants to minimize its obligations under D.C. FOIA, it can do so, either by amending D.C. FOIA or by amending the Legislative Privilege Act to make it clear that it specifically exempts from disclosure particular Council documents. In the meantime, this court must enforce the law currently on the books. That law does no,t justify the Council’s decision to withhold documents under D.C.Code § 2-534(a)(6) in this case. We therefore reverse the trial court’s ruling and remand for further proceedings consistent with this opinion.
So ordered.
Opinion by Senior Judge FARRELL, concurring in part and concurring in the judgment.