President Trump signs bill to reopen government

Democrats did not receive their one key demand in the shutdown battle: extending Affordable Care Act subsidies that are set to expire at the end of this year. Instead, the deal promises a vote on health care subsidies in the coming weeks -- something Senate Majority Leader John Thune had already offered as part of a deal over a month ago.

Sen. Bernie Sanders, an independent who has been a vocal leader in the fight to extend health care subsidies, posted a video on X Sunday night captioned: "Tonight was a very bad night."

"This was a very, very bad vote," Sanders said, adding that the deal "raises health care premiums for over 20 million Americans" and "paves the way for 15 million people to be thrown off of Medicaid and the Affordable Care Act."

Sanders said last week's elections -- in which Democrats across the country won by historic margins -- shows that "the American people want us to stand up to Trumpism, to his war against working-class people, to his authoritarianism. That is what the American people wanted. But tonight, that is not what happened."

Sanders was not alone. Sen. Elizabeth Warren said the party "lost" the fight over health care. Sen. Chris Murphy argued there was "no way to defend" the yes vote.

"My fear is that Trump gets stronger, not weaker, because of this acquiescence," Murphy wrote on X.

Several key Democratic governors, some of whom are rumored to be considering a bid for the White House in 2028, are criticizing the deal. Minnesota Gov. Tim Walz called the negotiations a "deeply disappointing result" with the administration steamrolling Congress. Illinois Gov. JB Pritzker wrote in a post on X that instead of a deal, it's an "empty promise," and California Gov. Gavin Newsom curtly called the move by Senate Democrats "pathetic."

READ MORE | 'A very bad night': Democrats face blowback from their own party over shutdown deal

Speaker Mike Johnson, walking back to his office, again would not commit to holding a vote in the House on the Affordable Care Act subsidies -- something Senate GOP leaders agreed to do as part of a deal they cut with Democrats to reopen the government.

Johnson said there will be a "deliberative process" in the lower chamber to "find consensus" among lawmakers.

"I do not guarantee the outcome of legislation or dates or deadlines or anything," he said.

Last week at a news conference, Johnson echoed a similar sentiment -- saying he would not make any promises on holding an ACA subsidies vote.

President Donald Trump, taking reporter questions in the Oval Office on Monday afternoon, discussed the Senate deal to end the government shutdown: "We have support from enough Democrats and we're going to be opening up our country."

Trump was asked by ABC News White House Correspondent Karen Travers if he would abide by the Senate deal's language on reversing mass firings the administration implemented during the shutdown.

"I'll abide by the deal. The deal is very good," Trump said.

Senate Minority Leader Chuck Schumer argued on Monday that Republicans are now to blame for rising health care costs after Affordable Care Act subsidies were not included in the bipartisan deal to reopen the government.

"The American people have now awoken to Trump's health care crisis. Health care is once again at the forefront of people's minds. People now see that premiums are about to skyrocket. They're terrified about how they're going to pay for their insurance," Schumer said on the Senate floor. "Democrats demanded that we find a way to fix this crisis and quickly, but Republicans have refused to move an inch. So, I cannot support the Republican bill that's on the floor because it fails to do anything of substance to fix America's health care crisis."

"Doing nothing is unacceptable, but that's the choice the Republican side made in obeisance to Donald Trump," Schumer added. "Republicans now own this health care crisis. They knew it was coming. We wanted to fix it. Republicans said no, and now it's on them."

-ABC News' Fritz Farrow