Thursday was the final day to select an Affordable Care Act health insurance plan across much of the country, as the expiration of federal subsidies drives up health costs and lawmakers remain locked in a debate over how to address the issue.

That's when the open enrollment window ends in most states for plans that start in February. About 10 states that run their own marketplaces have later deadlines, or have extended them to the end of the month to give their residents more time.

The date is a crucial one for millions of small business owners, gig workers, farmers, ranchers and others who don't get their health insurance from a job and therefore rely on marketplace plans. A record 24 million Americans purchased Affordable Care Act health plans last year.

But this year, their decisions over health coverage have been more difficult than usual as clarity over how much it will cost is hard to come by. And so far, enrollment is lagging behind last year's numbers — with about 22.8 million Americans having signed up so far, according to federal data.

Last year, for months, it was unclear whether Congress would allow for the end-of-year expiration of COVID-era expanded subsidies that had offset costs for more than 90% of enrollees. Democrats forced a record-long government shutdown over the issue, but still couldn't get a deal done. So the subsidies expired Jan. 1, leaving the average subsidized enrollee with more than double the monthly premium costs for 2026, according to an analysis from the health care nonprofit KFF.

Still, the question of whether Congress would resurrect the tax credits loomed over Washington. Several enrollees told The Associated Press they have either delayed signing up for coverage or signed up with a plan to cancel as they anxiously watch what's happening on Capitol Hill.

Last week, the House passed a three-year extension of the subsidies after 17 Republicans joined with Democrats against the wishes of Republican leaders. But the Senate rejected a similar bill last year.

Sen. Bernie Moreno, R-Ohio, has been leading a bipartisan group of 12 senators trying to devise a compromise and said this week that he expects to have a proposal by the end of the month. The contours of the senators’ bipartisan plan involves a two-year deal that would extend the enhanced subsidies while adding new limits on who can receive them. The proposal would also create the option, in the second year, of a new health savings account that President Donald Trump and Republicans prefer.

Under the deal being discussed, the ACA open enrollment period would be extended to March 1 of this year to allow people more time to figure out their coverage plans after the disruption.

Still, Republicans and Democrats say they have not completed the plan, and the two sides have yet to agree if there should be new limits on whether states can use separate funds for abortion coverage.

President Donald Trump on Thursday announced outlines of a plan he wants Congress to consider that would. It would, among other things, redirect ACA subsidies into health savings accounts that go directly to consumers. Democrats have largely rebuffed this idea as inadequate for offsetting health costs for most people.