BENAVIDES, Circuit Judge:
Plaintiff-Appellee Pelts & Skins farms alligators in Louisiana. Defendant-Appellant William Dwight Landreneau is Secretary of the Louisiana Department of Wild[425]*425life and Fisheries (“DWF”), the agency responsible for overseeing conservation of alligators.1 Louisiana requires alligator hunters and farmers to pay various fees, and DWF uses a portion of those fees to support generic marketing of alligator products. Pelts & Skins alleges that this practice constitutes a compelled subsidy for private speech that violates the First Amendment. The district court agreed with Pelts & Skins and permanently enjoined use of the fees to support generic marketing of alligator products.
We conclude that Pelts & Skins lacks standing to challenge the use of certain alligator-related fees. With regard to the fees Pelts & Skins does have standing to challenge, we agree with the district court that the use of those fees for generic marketing violates the First Amendment. We therefore affirm in part, vacate in part, and remand in part.
I.
The American alligator was once endangered, but Louisiana law now allows the hunting and farming of alligators for their meat and skins. DWF regulates the hunting, farming, processing, and shipment of alligators and alligator parts. See La.Rev. Stat. Ann. § 36:602(B) (West Supp.2004). DWF does not regulate the prices or marketing of alligators, but it does administer two funds, the proceeds of which support generic marketing of alligator products: the Louisiana Fur and Alligator Public Education and Marketing Fund (the “Marketing Fund”) and the Louisiana Alligator Resource Fund (the “Resource Fund”). The generic marketing supported by these two funds is the focus of this case.2
The Marketing Fund derives its revenues from license fees, i.e., the fees associated with the hunting licenses that fur trappers and alligator hunters must carry. See id. §§ 56:251(A), 56:266(D). Twenty dollars of every twenty-five-dollar license fee are earmarked for the Marketing Fund.3 Id. The Louisiana Legislature created the Marketing Fund to market alligator and fur products, to educate the public about the harvesting of those products, and to recommend strategies to the fur and alligator industry. Id. § 56:266(B).
The Resource Fund derives its revenues from a variety of fees imposed on alligator hunters, farmers, and processors. Id. § 56:279. The most notable of these fees is the tag fee, a charge for the tag that must be attached to every harvested alligator skin. Id. § 56:253(C).4 The Legis[426]*426lature created the Resource Fund “to help defray the cost of alligator programs” administered by DWF. Id. § 56:279(A). The Resource Fund supports alligator-related research and, when surplus funds are available, helps to fund alligator-related law enforcement and marketing programs. Id. § 56:279(13).
DWF monitors both funds, and the Secretary must approve all expenditures for generic marketing, but another state-created entity, the Louisiana Fur and Alligator Advisory Council (the “Council”), is directly responsible for the content of the generic marketing and must review and approve all expenditures from the funds. Id. §§ 266(C), 279(D)(3). The Council comprises the Secretary (or his designate), who serves ex officio, and eleven appointed members. Id. § 56:266(C). The speaker of the House and the president of the Senate each appoint one member. Id. The Secretary appoints nine members, and those nine members must represent “a cross-section of trappers, alligator hunters, coastal landowners, and alligator farmers.” Id. Two of those nine members must represent a private organization, the Louisiana Alligator Farmers and Ranchers Association. Id. The Secretary may appoint the remaining seven members based on nominations from the Louisiana Trappers and Alligator Hunters Association. Id.
Pelts & Skins, as Louisiana’s (and the world’s) largest alligator farming operation, pays fees that account for roughly 25% of the alligator-related revenues received by DWF. Pelts & Skins does not object to the collection of these revenues but does object to the expenditure of these funds on generic marketing. According to Pelts & Skins, its business depends on convincing consumers that it produces a unique product that is superior in quality to other alligator products. Generic alligator marketing undercuts this message because generic marketing does not differentiate between particular types, qualities, or brands of alligator products, but rather promotes the notion that alligator products in general are desirable, reliably available, and lawfully produced.5 Pelts & Skins also hints broadly that the Council’s generic marketing campaign, which consists mainly of sending representatives to fashion shows and setting up educational displays, is a boondoggle. However, Pelts & Skins is quick to clarify that its objection to generic marketing stems from the message of that marketing, not its efficacy.
Based on its objection to the generic marketing’s content, Pelts & Skins sought to enjoin DWF from expending revenues from the Marketing Fund and the Resource Fund for generic alligator marketing. According to Pelts & Skins, Louisiana violated the First Amendment by imposing mandatory fees on Pelts & Skins, then using those fees to subsidize a message with which Pelts & Skins disagrees. In response, the Secretary argued (1) that the Tax Injunction Act of 1937 barred federal jurisdiction; (2) that the generic marketing at issue was government speech not subject to First Amendment scrutiny; and (3) that, in the alternative, the generic marketing was merely ancillary to a broader cooperative [427]*427regime and therefore consistent with the First Amendment.
The parties agreed to submit the case on the record without live testimony. The district court determined (1) that the Tax Injunction Act did not bar federal jurisdiction; (2) that the generic marketing was not government speech; and (3) that the use of mandatory fees to fund generic marketing was not ancillary to a broader cooperative regime. Pelts & Skins, L.L.C. v. Jenkins, 259 F.Supp.2d 482 (M.D.La.2003). The court permanently enjoined the Secretary from “approving, authorizing or expending any revenue from the Louisiana Fur and Alligator Public Education and Marketing Fund or from the. Louisiana Alligator Resource Fund for the purpose of generic alligator marketing.” Id. at 494. The Secretary appealed.6
II.
We first address the Secretary’s contention that Pelts & Skins lacks standing to challenge expenditures from the Marketing Fund. The Secretary failed to raise this argument in the district court, but a party may raise standing at any time, even on appeal. Johnson v. City of Dallas, 61 F.3d 442, 443-44 (5th Cir.1995).
The first requirement of standing is that a party must demonstrate an injury in fact. See McConnell v. FEC, — U.S. -, 124 S.Ct. 619, 707, 157 L.Ed.2d 491 (2003). Pelts & Skins alleges that it has been injured in fact because it must -pay fees that directly support a message with which it disagrees. The Secretary claims that Pelts & Skins has failed to prove this injury with regard to the Marketing Fund. The Secretary concedes that Pelts & Skins has paid the tag fees that support the Resource Fund, and the record amply supports that concession.7 However, according to the Secretary, Pelts & Skins has not shown that it has ever paid the license fees that support the Marketing Fund.
We agree with the Secretary that Pelts & Skins failed to prove that Louisiana’s use of the marketing fund has caused an injury in fact. Because this case proceeded to final judgment,8 “the factual allegations supporting standing (if controverted) 9 must be supported adequately by the evidence adduced at trial.” Walker v. City of Mesquite, 169 F.3d 973, 978 (5th Cir.1999); see also Lujan v. Defenders of Wildlife, 504 U.S. 555, 561, 112 S.Ct. 2130, 119 L.Ed.2d 351 (1992). Pelts & Skins [428]*428must support each element of standing just as it would support any other matter on which it bears the burden of proof. Lewis v. Casey, 518 U.S. 343, 358, 116 S.Ct. 2174, 135 L.Ed.2d 606 (1996).
Pelts & Skins has not carried this burden. Nowhere does the record indicate that Pelts & Skins ever held a hunting license or paid any fee that supports the Marketing Fund. Instead, Pelts & Skins relies on assertions in pleadings. Had the district court decided this case on a motion to dismiss, these allegations would be sufficient; however, once a case passes this preliminary stage, a plaintiff must set forth evidence of an injury in fact. See Lujan, 504 U.S. at 561, 112 S.Ct. 2130 (1992); Walker, 169 F.3d at 978 & n. 15.10 The record contains no such evidence.
Pelts & Skins also relies on the district court’s finding that “plaintiffs farming operation is conditioned upon payment of mandatory fees (‘license fees’ and ‘tag fees’) to the DWF.” 259 F.Supp.2d at 483-84. We review for clear error the findings underlying a district court’s determination of standing. Rivera v. Wyeth-Ayerst Labs., 283 F.3d 315, 319 (5th Cir.2002); Pederson v. La. State Univ., 213 F.3d 858, 869 (5th Cir.2000). A finding is clearly erroneous if a review of the evidence leaves us with a firm conviction that the district court has made a mistake. Dickerson ex rel. Dickerson v. United States, 280 F.3d 470, 474 (5th Cir.2002). The absence of any evidence supporting the district court’s finding firmly convinces us that, based on the record as it stands, the district court has made a mistake. Cf. Walker v. U.S. Dep’t of Hous. & Urban Dev., 99 F.3d 761, 770 (5th Cir.1996).11 Given the parties’ failure to contest and to address standing in the district court, the district court’s finding is unsurprising; nevertheless, that finding is clearly erroneous on this record.
On this record, therefore, Pelts & Skins lacks standing to challenge expenditures from the Marketing Fund. A district court may only remedy the injury in fact the plaintiff has established. Lewis, 518 U.S. at 357, 116 S.Ct. 2174 (1996). We therefore vacate the portion of the injunction concerning the Marketing Fund.
When jurisdiction is not clear from the record but could exist, we may remand to the district court so that the parties may supplement the record. Molett v. Penrod Drilling Co., 872 F.2d 1221, 1228 (5th Cir.1989). Remand is especially appropriate when, as in this case, jurisdiction may hinge on a simple factual matter that was left untested because the parties did not dispute standing in the district court. After further review, the district court may determine that Pelts & Skins has paid the license fee. We therefore remand this case in part. On remand, the district [429]*429court should ascertain whether Pelts & Skins has standing to challenge the Marketing Fund and modify the injunction ac-’ cordingly.
III.
Although Pelts & Skins lacks standing to challenge use of the Marketing Fund, it has standing to challenge use of the Resource Fund. We therefore consider whether the use of the Resource Fund to promote generic alligator marketing violates the First Amendment. We review the district court’s resolution of this constitutional question de novo. Baby Dolls Topless Saloons, Inc. v. City of Dallas, 295 F.3d 471, 482 (5th Cir.2002).
A.
We first consider whether the generic alligator marketing is government speech or private speech. The government speech doctrine holds that “when the government appropriates public funds to promote a particular policy of its own, it is entitled to say what it wishes.” Rosenberger v. Rector & Visitors of Univ. of Va., 515 U.S. 819, 833, 115 S.Ct. 2510, 132 L.Ed.2d 700 (1995). The Secretary argues that generic alligator marketing is immune from First Amendment review because the State of Louisiana is speaking.12
We disagree. Not all government-facilitated speech is government speech. The government speech doctrine does not apply if a program is “designed to facilitate private speech, not to promote a governmental message.” Velazquez, 531 U.S. at 542, 121 S.Ct. 1043. In this case, three considerations — the method by which DWF funds generic marketing, the composition and operation of the Fur and Alligator Advisory Council, and an application of the policies underlying the government speech doctrine — convince us that the generic marketing at issue is not government speech, but government facilitation of the private speech of fur and alligator harvesters.13
[430]*430First, the method by which DWF funds generic alligator marketing suggests that generic alligator advertising is the message, of, fur and alligator harvesters, not Louisiana as a whole. Government speech is typically funded from a government’s general revenues, not assessments levied on a particular group. See Keller, 496 U.S. at 11, 110 S.Ct. 2228; Mich. Pork, 348 F.3d at 162; Frame, 885 F.2d at 1132-33. The portions of the Resource Fund administered by the Council do not come from general state revenues; rather, they come from fees levied' on only one group: harvesters of furs and alligators. The Resource Fund remains in an account segregated from the State’s general revenues. La.Rev.Stat. Ann. § 56:279(C)(1) (West Supp.2004). Moreover, the expenditures recommended, reviewed, and approved by the Council primarily concern precisely those persons who must contribute to the Resource Fund. This “close nexus” between the individuals who pay for the speech and the content of the speech suggests that Louisiana is facilitating a private message, not expressing its own. See Frame, 885 F.2d at 1132.
Second, an organization that represents private interests, the Council, is primarily responsible for the generic marketing campaign. Cochran, Michigan Pork, and Frame all dealt with generic marketing programs run by industry-specific councils. In each of these cases, the federal agriculture secretary appointed the members of the council based on nominations from industry representatives. Because these councils were composed of industry representatives, the courts determined that those- councils, though appointed by the government, represented private interests. See Cochran, 359 F.3d at 274; Michigan Pork, 348 F.3d at 162; Frame, 885 F.2d at 1133.
Likewise, although the Council is a government ' creation, the composition of the Council demonstrates that it represents primarily private interests.14 The Secre[431]*431tary or Ms designate serves on the Council ex officio, and he and other government officials appoint all the remaining members of the Council, but the Secretary does not enjoy plenary discretion to appoint any person to the Council. La.Rev.Stat. Ann. § 56:266(C) (West Supp.2004). Rather, he must appoint a carefully calibrated “cross section of trappers, alligator hunters, coastal landowners, and alligator farmers.” Id. Two members of the Council must represent a private organization, the Louisiana Farmers and Ranchers Association. Id. The Secretary may choose all nine of the Council members he appoints based on nominations from private organizations, id., and the record suggests that the Secretary does so. Because representatives of private alligator harvesters compose the heavy majority of the Council, it naturally reflects private rather than governmental interests.15
Furthermore, although the Secretary portrays alligator marketing as a DWF-run program, the Council, not DWF, primarily controls how the Resource Fund is used.16 Cf. Michigan Pork, 348 F.3d at 162. DWF cannot spend money from the Resource Fund without the Council’s approval. La.Rev.Stat. Ann. § 56:279(D)(3) (West Supp.2004). Moreover, the record-suggests that DWF’s approval of contracts recommended by the Council is largely perfunctory. Cf. United Foods, 533 U.S. at 416-17, 121 S.Ct. 2334 (suggesting in dictum that evidence of pro forma oversight implies that government-facilitated generic marketing is not government speech). Our review of the record reveals no evidence that DWF crafts or edits the content of any of the generic marketing at issue; rather, this task falls to private contractors hired by the Council to market alligator products. Thus, the. Council, not DWF, is primarily responsible for generic alligator marketing.
Third, the policies underlying the government speech doctrine do not support the application of that doctrine to this case. One rationale for the government speech doctrine is that, without the doctrine, “every citizen [would] have a right to insist that no one paid by public funds express a view with which he disagreed ... and the process of government as we know it would be radically transformed.” Keller, 496 U.S. at 12-13, 110 S.Ct. 2228. This case, however, does not raise the specter of lawsuit-induced paralysis. As our discussion of standing demonstrates, only members of the narrow group compelled to contribute funds to subsidize directly a [432]*432private message have standing to challenge the expression at issue.
A second rationale for the government speech doctrine is that “[w]hen the government speaks, for instance to promote its own policies or to advance a particular idea, it is, in the end, accountable to the electorate and the political process for its advocacy.” Velazquez, 531 U.S. at 541, 121 S.Ct. 1043 (quoting Southworth, 529 U.S. at 235, 120 S.Ct. 1346). In contrast, the government can easily avoid accountability when it imposes costs on a single, narrow group to facilitate a specialized message, especially if only a small minority of that group objects to the message expressed.
We are not dealing with a program funded from general revenues by broadly applicable taxes. Nor are we dealing with a governmental message crafted, controlled, and expressed by an agency designed to represent state government. Rather, in this case we confront a program in which the government uses its authority to exact fees from private individuals, then facilitates the use of those fees to express a message designed to benefit private commercial interests.-' This sort of program is not government speech.
B.
Because we have determined that use of the Resource Fund for generic marketing represents a compelled subsidy for private speech, we must decide whether that compulsion is nonetheless permissible. The Supreme Court has twice addressed compelled subsidies for generic marketing. In Glickman v. Wileman Bros. & Elliott, Inc., 521 U.S. 457, 117 S.Ct. 2130, 138 L.Ed.2d 585 (1997), the Court upheld compelled subsidies for generic fruit marketing. In United States v. United Foods, Inc., 533 U.S. 405, 121 S.Ct. 2334, 150 L.Ed.2d 438 (2001), the Court struck down compelled subsidies for generic mushroom marketing. We must mediate between these two contrasting precedents, or, in the words of the district court, “determine whether Louisiana alligator producers are more like mushroom producers than like peach producers.” Pelts & Skins, 259 F.Supp.2d at 483.
In Glickman, the Court evaluated a New Deal-era regulatory scheme that required producers of peaches, plums, and nectarines to participate in “[cjollective, rathér than competitive, marketing.” 521 U.S. at 461, 117 S.Ct. 2130. This collective marketing scheme “displaced competition” by imposing uniform prices, dictating the quality and quantity of the fruits marketed, determining the grade and size of the fruits sold, providing for the orderly disposition of surplus, authorizing joint research and development projects, requiring standardized packaging, and even exempting affected producers from antitrust laws. Id. As part of this displacement of competition, the government required producers to pay for generic marketing of the fruit. Id. A group of growers alleged that the assessments violated the First Amendment. The Court upheld the assessments only after “stress[ing] the importance of the statutory context.” Id. at 469, 117 S.Ct. 2130. Because the growers were part of a “broader collective enterprise in which their freedom to act independently [was] already constrained by the regulatory scheme,” the Court characterized the assessments for generic marketing as “a species of economic regulation that should enjoy the same strong presumption of validity that we accord to other policy judgments made by Congress.” Id. at 477, 117 S.Ct. 2130.
Later, in United Foods, mushroom handlers refused to pay mandatory assessments to fund generic mushroom marketing. 533 U.S. at 408-09, 121 S.Ct. 2334. The Court struck down the assessments as [433]*433violations of the handlers’ First Amendment right not to subsidize speech with which they disagreed. Id. at 409, 121 S.Ct. 2834. Unlike the program in Glick-man, the Court reasoned, the mushroom program was not “ancillary to a more comprehensive program restricting marketing autonomy.” Id. at 411, 121 S.Ct. 2334. Rather, the generic mushroom advertising, “far from being ancillary, [was] the principal object of the regulatory scheme.” Id. at 411-12, 121 S.Ct. 2334. The Court summarized its compelled subsidy cases and enunciated a guiding principle: When the government binds individuals into a collective association, the government can also require that those persons subsidize speech germane to the purpose underlying the association. United Foods, 533 U.S. at 413-15, 121 S.Ct. 2334; see also Keller, 496 U.S. at 13-14, 110 S.Ct. 2228 (integrated bar); Abood v. Detroit Bd. of Educ., 431 U.S. 209, 235-36, 97 S.Ct. 1782, 52 L.Ed.2d 261 (1977) (closed union shop). Because the mushroom program did not require association except to support generic marketing, the program violated the First Amendment. United Foods, 533 U.S. at 415-16, 121 S.Ct. 2334.
We agree with the district court that Louisiana’s generic alligator marketing program more closely resembles the mushroom program at issue in United Foods than the fruit program at issue in Glick-man. The Glickman rule permitting compelled subsidies applies when individuals have been “bound together” in a collective. United Foods, 533 U.S. at 412, 121 S.Ct. 2334; accord Cochran, 359 F.3d at 275; Delano Farms Co. v. Cal. Table Grape Comm’n, 318 F.3d 895, 898-99 (9th Cir.2003) (striking down compelled subsidies for generic grape marketing). Without an underlying collectivized association, a state cannot justify a compelled subsidy. See United Foods, 533 U.S. at 413-15, 121 S.Ct. 2334. Louisiana alligator producers are not part of a collective association akin to Glickman’s marketing cooperative. None of the laws governing alligator production imposes collective rather than competitive marketing as the scheme in Glickman did. Cf. Cochran, 359 F.3d at 275. Rather, as the Secretary admits, the State of Louisiana does not regulate prices in the alligator market, and alligator harvesters are free to negotiate prices and to market products as they wish.17
The Secretary emphasizes Louisiana’s extensive regulation of alligator harvesting and argues that generic alligator marketing, like generic peach marketing, is permissible because it is ancillary to Louisiana’s alligator regulations.18 Regulations alone do not create compelled association. See Cochran, 359 F.3d at 275; Delano Farms, 318 F.3d at 899. In Glickman, the fruit producers were subject to a specific type of regulation:, a scheme that displaced individual marketing efforts and thus necessitated collective generic marketing. See 521 U.S. at 461, 117 S.Ct. 2130. Likewise, in Keller and Abood, the [434]*434state required that individuals join a collective interest group; to be effective, that interest group had to speak on behalf of its members on certain issues. See Keller, 496 U.S. at 14-15, 110 S.Ct. 2228; Abood, 431 U.S. at 220-23, 97 S.Ct. 1782. A number of interdependent state, federal, and international laws impose requirements on alligator harvesters, but these laws do not require collective association, and “it is only the overriding associational purpose which allows compelled subsidy for speech in the first place.” United Foods, 533 U.S. at 413, 121 S.Ct. 2334 (emphasis added).19
We recognize that, unlike the assessments at issue in United Foods, Cochran, and Delano Farms, a majority of the alligator-related assessments fund programs other than generic marketing. See United Foods, 533 U.S. at 411-12, 415, 121 S.Ct. 2334; Cochran, 359 F.3d at 276; Delano Farms, 318 F.3d at 899. In each of the past several years, the Council has spent approximately 15% of the Resource Fund on generic marketing and the remainder on research and law enforcement. This distinction in the percentage of fees that go to generic marketing does not support applying Glickman to this case. The key element of' Glickman — a highly collectivized marketing association — is still absent. The common thread uniting Abood, Keller, Glickman, and United Foods is that compelled subsidization of speech is permissible when individuals have been bound into a collective association. United Foods, 533 U.S. at 413-15, 121 S.Ct. 2334. The fees imposed here, though used for more than generic marketing, represent a collective association only in the loosest sense of that term.20
In sum, Louisiana’s alligator regulations are more analogous to the mushroom marketing program in United Foods than to the fruit marketing collective in Glickman. The use of mandatory fees for generic marketing is not ancillary to a government-imposed collective association. Louisiana’s use of the Resource Fund to support generic marketing therefore violates the First Amendment.21
[435]*435IV.
As the record stands, Pelts & Skins has not proven that it has standing to challenge use of the Marketing Fund. Therefore, we vacate the portion of the injunction barring Louisiana from using the Marketing Fund to support generic alligator marketing and remand so that the district court may determine whether Pelts & Skins has standing and modify the injunction accordingly.
With regard to the remaining challenge, we conclude that Louisiana’s use of the Resource Fund to support generic marketing violates the First Amendment. We therefore affirm the district court’s judgment granting a permanent injunction against use of the Resource Fund for generic alligator marketing.
AFFIRMED in part, VACATED in part, and REMANDED in part.