Congress people also understand that he won't withhold names of people that stopped his agenda. He will go in front of the camera and call them out one name at a time. Again, he's not politically correct, he's anti-politically correct. And if those members who get in his way don't want to risk losing their job, they will learn to work with Trump.
Remember this isn't a career for Trump. Unlike most politicians, he's not hoping for a half-mil year job in the private sector as a "consultant" when he retires. He's not worried about how much he can get paid to do speeches when he's done with his term(s). He doesn't give a rats......
If Cruz is not electable, then what you have is either Trump, or Rubio V Clinton (more than likely) or Sanders.(far less likely)
It is what it is, and except for Rubio, if anyone actually thinks the other 3 are going to be controllable at all, good luck with that! Doesn't mean that they are going to make all good choices or bad, but rather we again will have little congressional input...........or certainly far less than we should.
This is why I was hoping for Cruz. He is a constitutionalist, and I believe we need that now, more than ever. (although, I doubt much would get done except for the rescinding of Obama's EOs)
We are no longer voting for a President it seems, we are voting for a king/queen who uses powers not granted to him/her by the constitution. When you have 3 of 5 people left in the race who we all know will use this power, and 1 of the other 2 left are deemed "not electable," then Houston, as far as what our country was founded on, "we have a problem." And, add to that, the one who COULD get elected and be controlled is a huge "squish," should leave everyone from both sides, extremely unhappy.