That clash — with the White House on one side and GOP hard-liners in Congress on the other — is now playing out in closed-door meetings and in the hallways of Capitol Hill as the party rushes to write the megabill and potentially cut more than a half-trillion dollars from the safety-net health program over the coming decade.

President Donald Trump and House Republicans are slated to meet to wrangle over one of the thorniest issues dividing the party: whether to cut Medicaid benefits for millions of low-income Americans.

But concerns about Medicaid among a dozen House Republicans and several Senate Republicans have prompted Trump and party leaders to assure lawmakers that their measures will not lead to cuts in benefits,