Trump and McConnell are certainly welcome to try authorizing war when the Democrats control the House.
4) He's allowing it to come to the floor to but the breaks on a strike against Iran, at which point the GOP can turn right around and cry and crow about "APPEASEMENT" and "NEVILLE CHAMBERLAIN"
They're also certainly welcome to try this, but even letting this insane bulls**t come up for a vote is a disastrously bad idea. War in the Middle East is a losing issue with almost every modern voter base that matters in the contest of GOP victory.
