“The proposed amendment would restrict the most important speech the First Amendment protects, core political speech,” said Sen. Chuck Grassley (R-Iowa) on Wednesday. “It’s hard to imagine what would be more radical than the Congress passing a constitutional amendment to overturn a dozen Supreme Court decisions that have protected individual rights. Free speech would be dramatically curtailed.”
http://www.politico.com/story/2014/09/senate-block-campaign-finance-amendment-110864.html