In the U.S. Senate, why does it take more than a majority - a 60-vote threshold - to pass legislation? What are the "filibuster" and "cloture" rules? Where did they come from? Are these rules unconstitutional? What's the "nuclear option?" Will the Senate "go nuclear" and restore majority rule when it comes to passing laws and consenting to Supreme Court nominations? One of the premier lawyers in the country, Emmet Bondurant, breaks it all down and makes his case for how the U.S. Senate should operate.