Cite as: 596 U. S. ____ (2022) 3 Syllabus campaign—to repay Cruz’s loans. Ordinarily, it would not matter whether a plaintiff was challenging the statute’s enforcement or instead the enforcement of a regulation. Here, however, the parties assume that the distinction makes a difference because the subject-matter jurisdiction of the three-judge District Court is limited to actions challenging the enforcement of the statute. See BRCA §304(a). Even under the Government’s account, the present inability of the Committee to repay and Cruz to recover the final $10,000 is traceable to the operation of Section 304 itself. An agency’s regulation cannot “operate independently of” the statute that authorized it. California v. Texas, 593 U. S. ___, ___. Here, the FEC’s 20-day rule was expressly promulgated to implement Section 304. Thus, if Section 304 is invalid and unenforceable, the agency’s 20-day rule is as well, and the remedy appellees sought in the District Court would redress appellees’ harm by preventing enforcement of the agency’s 20-day rule. See Lujan, 504 U. S., at 561. In challenging the FEC’s threatened enforcement of the loan-repayment limitation, through its implementing regulation, appellees may raise constitutional claims against Section 304, the statutory provision that, through the agency’s regulation, is being enforced. Cf. Collins v. Yellen, 594 U. S. ___, ___–___. And because they are challenging “the constitutionality of [a] provision of [BCRA],” §403(a), jurisdiction was proper in the three-judge District Court. Pp. 6–10. 2. Section 304 of BCRA burdens core political speech without proper justification. Pp. 10–22. (a) The loan-repayment limitation abridges First Amendment rights by burdening candidates who wish to make expenditures on behalf of their own candidacy through personal loans. Restricting the sources of funds that campaigns may use to repay candidate loans increases the risk that such loans will not be repaid in full, which, in turn, deters candidates from loaning money to their campaigns. This burden is no small matter. Debt is a ubiquitous tool for financing electoral campaigns, especially for new candidates and challengers. By inhibiting a candidate from using this critical source of campaign funding, Section 304 raises a barrier to entry—thus abridging political speech. Pp. 10–13. (b) The Government has not demonstrated that the loan-repayment limitation furthers a permissible goal. Any law that burdens First Amendment freedoms, even slightly, must be justified by a permissible interest. Pp. 13–22. (i) The only permissible ground for restricting political speech recognized by this Court is the prevention of “quid pro quo” corruption or its appearance. See McCutcheon v. Federal Election Comm’n, 572 U. S. 185, 207. Here, the Government argues that the contributions at issue raise a heightened risk of corruption because they are used to

Select target paragraph3