The ACA was a bad idea from the beginning. It was built on lies( lower premiums, choice), it was forced through without bipartisan support and it was never popular with the American public. And it destroyed what was not broken and it failed to fix what was. When the costs skyrocketed, its days were numbered. With the negative influence on the job market and the lack of choice on the exchanges, the ACA was doomed to fail. That Mr. Trump is on board is incidental. The opposition to an ill-conceived bill goes all the way to its introduction, long before his run. Where this goes from here is anybody's guess.