McCutcheon v. Federal Election Commission involved a challenge to limits imposed on the amount a donor may contribute during a single election cycle. In McCutcheon, the Court was presented with the question of whether the aggregate limits placed on contributions to candidate and noncandidate committees either lacked a cognizable constitutional interest or were unconstitutionally too low. In a five to four decision, the Supreme Court held that the aggregate limits on campaign contributions burden substantial First Amendment rights without furthering a permissible government interest.
Stephen M. DeGenaro,
McCutcheon v. Federal Election Commission,
Notre Dame L. Rev. Online
Available at: https://scholarship.law.nd.edu/ndlr_online/vol90/iss1/3