Trump's statement is so ignorant it's laughable. In this Congress the House has 193 Democrats, not even close enough to block the AHCA. Republicans needed 215 votes owing to vacant seats, but 33 Republicans said they would vote no. That was 10 moderate Republicans and 8 mainstream Republicans who considered the proposed AHCA as too injurious to their constituents, and 15 hard-liners from the "Freedom Caucus" who wanted no federal subsidy of health care at all. So Republicans own the failure of AHCA. Furthermore, as the only party with control of the ACA, they "own" the ACA and whatever happens to it. So, if Congressional Republicans allow the ACA to fail, it won't be the fault of Nancy Pelosi and Chuck Schumer, it will be the fault, primarily, of Paul Ryan, the snake in an alter-boy costume, and Mitch McConnell, the guy the Koch brothers bought.