WASHINGTON — The White House stepped up demands Sunday for revived congressional efforts on health care and suggested senators cancel their entire summer break, if needed, to pass legislation after failed votes last week.

Aides said President Trump is prepared in the coming days to end required payments to insurers under the Affordable Care Act as part of a bid to let “Obamacare implode” and force the Senate to act.

It was all part of a weekend flurry of Trump tweets and other statements insisting the seven-year Republican quest to repeal former President Barack Obama’s signature legislative achievement was not over.

“The president will not accept those who said it’s, quote, ‘time to move on,’ ” White House adviser Kellyanne Conway said. Those were the words used by Senate Majority Leader Mitch McConnell, R-Ky., after the early Friday morning defeat of the Republican proposal.

Conway said Trump was deciding whether to act on his threat to end cost-sharing reduction payments, which are aimed at trimming out-of-pocket costs for lower-income people. “He’s going to make that decision this week, and that’s a decision that only he can make,” Conway said.

Republicans hold a 52-48 majority in the Senate.

“Don’t give up Republican senators, the World is watching: Repeal & Replace,” Trump said in a tweet.

White House budget director Mick Mulvaney, when asked Sunday if no other legislative business should be taken up until the Senate acts again on health care, responded “yes.”

While the House has begun a five-week recess, the Senate is scheduled to work two more weeks before a summer break. McConnell has said the unfinished business includes addressing a backlog of executive and judicial nominations, coming ahead of a busy agenda in September that involves passing a defense spending bill and raising the government’s borrowing limit.

Trump warned over the weekend that he would end federal subsidies for health insurance for Congress and the rest of the country if the Senate didn’t act soon. He was referring in part to a federal contribution for lawmakers and their staffs, who were moved onto Obamacare insurance exchanges as part of the 2010 law.

The subsidies, totaling about $7 billion a year, help reduce deductibles and copayments for consumers with modest incomes.

The Obama administration used its rule-making authority to set direct payments to insurers to help offset these costs. Trump inherited the payment structure, but he also has the power to end them.