Trump’s inevitable clash with congressional Republicans has arrived. What happens next?

That’s a recipe for five-plus months of pre-election headaches that the GOP seems to have belatedly concluded it needs to try to head off.

And Trump is increasingly running into a math problem — partially of his own making.

While Republicans have 53 votes in the Senate, the president already has to deal with a pair of moderates in Sens. Lisa Murkowski continue reading …