Millions of Americans who will lose access to subsidies when the current formula expires are looking at a jump in premiums, in many cases hundreds of dollars a month.
The agreement prompted a backlash within the party, not only against the Democratic defectors who supported it, but against Senator Chuck Schumer, the leader who did not.
Senators Catherine Cortez Masto, Maggie Hassan, Jeanne Shaheen, Angus King and Tim Kaine, who voted with Republicans to end the government shutdown, at the Capitol on Sunday night.
For 40 days, Senator Chuck Schumer kept his caucus unified. But an end approached without an extension of expiring health insurance subsidies that Democrats had demanded.
Senator Angus King, one of the senators who negotiated with Republicans, said that the length of the shutdown had pushed some colleagues to support a deal without the extension of Affordable Care Act subsidies they had originally sought.
After weeks of stalemate, Senate Democrats said they were willing to reopen the government in exchange for a one-year extension of health care subsidies. Republicans ruled it out.
“Democrats are ready to clear the way to quickly pass a government funding bill that includes health care affordability,” Senator Chuck Schumer of New York, the minority leader, said on Friday.
President Trump’s declaration that the closure had hurt his party on Tuesday appeared to have stiffened Democrats’ resolve and put at least a temporary damper on talks to end the crisis.
President Trump and administration officials indicated the fallout could intensify in the coming days, even as he has kept himself at a remove from the crisis.
President Trump leaving West Palm Beach to return to Washington on Sunday. For weeks, the Trump administration has played a game of winners and losers with the shutdown.
Lawmakers on Capitol Hill are eyeing Obamacare open enrollment and off-year elections as moments that could create political anxiety to shake the status quo.