Sen. John Cornyn, R-Texas, reversed himself on the Senate filibuster Wednesday after years of unflinching support for the 60-vote threshold to pass most bills. Now, locked in a competitive Republican runoff for his Senate seat and eyeing President Donald Trump's endorsement, Cornyn says he'll support "whatever changes to Senate rules that may prove necessary" to pass the SAVE America Act, a sweeping election overhaul bill that Trump has called his No. 1 priority. Cornyn's comments are part of an op-ed he wrote in the New York Post published Wednesday, titled: "Why the SAVE Act matters more than the filibuster." The...