On Wednesday, the U.S. Senate rejected Democratic and Republican versions of a balanced budget amendment. What was the difference between the two proposals? Can there be common ground on this? Would the Senate Republicans support the version of the amendment that failed in the House? We discuss it all with Utah Sen. Mike Lee, who co-authored the GOP amendment. Sen. Lee also weighs in on the latest budget showdown and has some very strong words for opponents of the Keystone Pipeline.