Citizens United v. Federal Election Commission, No. 08-205, 558 U.S. 310 (2010), is a U.S. constitutional law and corporate law case dealing with the regulation of campaign spending by organizations. The United States Supreme Court held (5–4) that freedom of speech prohibited the government from restricting independent political expenditures by a nonprofit corporation. The principles articulated by the Supreme Court in the case have also been extended to for-profit corporations, labor unions and other associations.