Repeal-and-replace is probably doomed. Congress rarely works along party lines.
“In the seven years after the Affordable Care Act became law, Republicans voted more than 60 times to repeal it. Each time, the legislation passed the House easily, only for Democrats to block it in the Senate; in 2015, though, a repeal bill passed the Senate, too, forcing President Barack Obama to veto it. So when the GOP began this year in control of Congress and with President Trump in the White House, the law’s fate might have seemed sealed.”