A Texas showdown on Twitter/X had Sen. John Cornyn (R-TX) trading fire with scandal-plagued state Attorney General Ken Paxton. The first shot came from Michael Quinn Sullivan who called out the senator for failing to protect the Southern Border. His tweet reads: “While Texans slept, @JohnCornyn sent $95 billion to help other countries with their border problems. Question: when was the last time Cornyn stayed up all night fighting for our border?” ALSO READ: How Donald Trump is spreading a dangerous mental illness to his supporters Paxton piled on. “This is a question all Texans should be askin…