Buckley v. Valeo (1976)
Ruling that limits on election spending in the Federal Election Campaign Act of 1971 are unconstitutional.
Bush v. Gore (2000)
Ruling that the state of Florida's court-ordered manual recount of vote ballots in the 2000 presidential election violated the 14th amendment and was therefore unconstitutional.
Citizens United v. SEC (2010)
Decision stating First Amendment (Freedom of Speech clause) does not limit political campaign fund contributions from corporations and labor unions.