General Discussion

Through social media posts, the president renewed his attacks on the Affordable Care Act, commonly called Obamacare, which he has spent years assailing and promising to replace, but to no avail. Mr. Trump suggested that premiums for consumers and share prices for insurers had risen too much in the 15 years since the law passed, and he was ready to work on a solution — if Democrats reopened the government first.

“I stand ready to work with both Parties to solve this problem once the Government is open,” he wrote on Sunday.

Mr. Trump has insisted for more than a month that Democrats sign on to a Republican measure to reopen the government, without the concessions they have sought on health programs, including the subsidies. On Friday, Democrats substantially scaled back their demands, saying they would be willing to reopen the government in exchange for a one-year extension, but Republicans quickly rejected the offer.