People hold signs during a rally in support of resolution calling for a constitutional amendment that says corporations are not people. January 2012. (AP Photo/Toby Talbot)

People hold signs during a rally in support of resolution calling for a constitutional amendment that says corporations are not people on the anniversary of the Citizens United ruling Friday, Jan. 20, 2012 in Montpelier, Vt. (AP Photo/Toby Talbot – AP120120019100)