“There will be a multiyear transition into the replacement,” said Senate Majority Whip John Cornyn (R-Tex.). “This is a failed piece of legislation and it is coming apart at the seams, but it is going to take us awhile to make that transition from the repeal to actually replacing it.”

mmhmm.

when he said on day one, he meant in terms of a biblical analogy. because the lord is working through him, and he is carrying out god's plans. so, day one really means his first term.

https://www.washingtonpost.com/news/powerpost/wp/2016/11/30/getting-rid-of-obamacare-may-take-longer-than-trump-plans/?tid=ss_twm&utm_term=.de660945dc22