Among the more controversial decisions delivered by the U.S. Supreme court in recent years was the ruling in the 2010 Citizens United v. FEC case which struck down the McCain-Feingold Bipartisan Campaign Reform Act of 2002 campaign finance reform bill as unconstitutional. The chief argument of the majority decision was that the McCain-Feingold bill violated free speech rights of corporations, labor unions, and other associations because the court equated these groups to individual citizens. It opened the door for unlimited spending by corporations and other large entities with vast sums of money at their disposal. The Story of Stuff gives a primer: