On Thursday Sept 11 Senate Republicans blocked a vote on a constitutional amendment to overturn Citizens United and other Supreme Court rulings dating back to 1976.
The proposal, offered by Sen. Tom Udall (D-NM), would amend the Constitution to restore the authority of Congress to establish campaign finance limits. According to a Senate Judiciary Committee report this year, it would also overturn part of the landmark 1976 Supreme Court ruling in Buckley v. Valeo, which upheld campaign contribution limits but invalidated restrictions on spending in elections.
“Since the decision came down in 2010, our campaign finance system has been under siege, buried in billions of dollars from outside groups and super PACs,” he said. “We have been fighting from day one to rid our political system of the poison of Citizens United. Folks want their senators to work together to find real solutions, not be bogged down in the endless gridlock of the Citizens United era.”
The party line vote was 54 in favor, 42 against, falling short of the 60 votes needed to defeat a filibuster and proceed to a final vote.[SOURCE](http://talkingpointsmemo.com/dc/senate-republicans-filibuster-constitutional-amendment-citizens-united)