U.S. Sen. John Cornyn, R-Texas, wasted no time in trolling the shit out of his primary rival, Texas Attorney General Ken Paxton, over a letter federal regulators sent Paxton’s Senate campaign demanding that it explain $658,000 in potentially illegal contributions. The Current was the first to report the Federal Election Commission contacted Paxton’s campaign Sunday, ordering its treasurer to refund or explain roughly 100 second-quarter donations that exceed federally allowed limits. By Wednesday, Cornyn’s campaign was already running a 35-second online ad alleging the FEC inquiry is only the latest ethical breach by Paxton.