Citizens United v. Federal Election Commission, 558 U.S. 310 (2010), was a landmark decision of the Supreme Court of the United States concerning the relationship between campaign finance and free speech. It was argued in 2009 and decided in 2010. The Court held that the free speech clause of the First Amendment prohibits the government from restricting independent expenditures for political campaigns by corporations and committees established for the purpose of fundraising (PACs).