Even Graham and Cassidy can't answer simple questions about what their bill will do and what it no longer guarantees, like like prohibiting lifetime caps and discrimination against those with pre-existing conditions .  Trump most likely hasn't read it (if he had he would have said so). All of the Medical Experts have come out on Kimmel's side. Every healthcare organization in the country from the AMA, American Hospital Association, Cancer Society, MS, ALS, etc, have come out against the Bill. 

All Trump and the GOP care about is a symbolic win. Even Chuck Grassley stated that there are 10 good reasons to vote against it, but they promised to do something to repeal the ACA. So, consequences be damned, Regular Order of the Senate be damned, they are just giong to vote without even holding hearings.

Talk about ramming something through. Al least the ACA had a year of open hearings with witnesses on both sides, open committee meetings and a CBO score.