While Republicans broadly share the goal of Trump’s promised “big tax cuts,” the president will have to bridge many of the same divides within his own party that sunk the attempted overhaul of the Affordable Care Act. And without savings anticipated from the health-care bill, paying for the “massive” cuts Trump has promised for corporations and middle-class families becomes considerably more complicated.

Meanwhile, other marquee agenda items, including a $1 trillion investment in roads and other infrastructure and proposed crackdowns on both legal and illegal immigration, will require the support of Democrats, many of whom have been alienated by the highly partisan start to Trump’s tenure…

“It’s a momentum issue,” said Rep. Mike Coffman (R-Colo.). “The fact is that, you know, you came out of the gate and you stumbled.”

Doug Heye, a GOP consultant and former congressional staffer, said Republicans, having achieved control of both chambers of Congress and the White House, were left with a lot to prove.

“It sends a troubling sign to a lot of folks about the broader issue of whether Republicans will be able to govern,” he said.