The GOP made a Faustian bargain with Trump. They will look the other way with regard to his abhorrent behavior and daily antics -- as long as he signs their bills, and enacts their agenda -- which is ultimately the agenda of the so-called 'Swamp' (aka Establishment Corporate Interests). This was foretold in 2012:
“We are not auditioning for fearless leader. We don’t need a president to tell us in what direction to go. We know what direction to go. ... We just need a president to sign this stuff.” - Grover Norquist
After a solid year of eating Trump's nonsense, the devil demanded his due on taxes. And thus, like the Tea Party before it, another populist movement has been swallowed whole and successfully absorbed. In trying to drain the swamp, the swamp has turned Trump into the ultimate Swamp Monster -- ushering in the biggest upward redistribution of wealth in American history.
This is why populism can be a dangerous thing. The devil is not in the details, but in who is the largest beneficiary of the populism. Or to put it more succinctly -- follow the money.
Sorry, folks. Those programs that were benefiting the poor and middle class? They're now on the chopping block. The GOP spent your money on tax cuts for the uber-rich and now needs to tighten the government belt.