Talking to service members (!) a few weeks ago, Trump expressed a cynical attitude toward health care:
I've been saying that -- Mike, I think you'll agree -- for a long time. Let Obamacare fail. It will be a lot easier. And I think we're probably in that position where we'll just let Obamacare fail. We're not going to own it. I'm not going to own it. I can tell you, the Republicans are not going to own it.
-- Donald J. Trump: "Remarks at a Luncheon with Servicemembers," July 18, 2017. Online by Gerhard Peters and John T. Woolley, The American Presidency Project. http://www.presidency.ucsb.edu/ws/?pid=126679 .
From Kaiser:
A large share of Americans (78 percent) think President Trump and his administration should do what they can to make the current health care law work while few (17 percent) say they should do what they can to make the law fail so they can replace it later. About half of Republicans and supporters of President Trump say the Trump administration should do what they can to make the law work (52 percent and 51 percent, respectively) while about four in ten say they should do what they can to make the law fail (40 percent and 39 percent, respectively). Moving forward, a majority of the public (60 percent) says President Trump and Republicans in Congress are responsible for any problems with the ACA.