That would destroy the charade of him "fighting the Left" and all that crap. Oh, the noise and really angry hearing he would host! He might even hold up a budget vote for a couple minutes to really drive his outrage home!

Then, he would talk about the need to get along, how this is the moment to work together and reach across the aisle and all that McStain crap.

His charade is shattered if he gets over the top with the help of "the other team"