They will tell anyone who will listen that their constituents sent them to Washington to fight. Not to govern, to fight. If you send your kid to school to fight, and not to learn, he'll find a way to get into a fight. Same thing with Republicans. If it wasn't PP, they'd be shutting down the government over something else. It's the confrontation that gets them elected.
They're like a selfish kid with a toy. If they can't have it, they'll break it so that nobody can have it.
When they have it, they'll break it anyway, of course, being both arrogant & foolish, then blame it on somebody else.