The Republican-controlled U.S. House of Representatives is expected to pass legislation renewing expired healthcare subsidies on Thursday, despite objections from within the GOP. The bill, initially backed by Democrats, aims to prevent millions of Americans from facing substantial increases in health insurance coverage costs.

The subsidies, which were allowed to lapse earlier this year, significantly reduce out-of-pocket expenses for individuals and families purchasing health insurance through the Affordable Care Act (ACA) marketplaces. Without these subsidies, many Americans could see their monthly premiums rise considerably, potentially making coverage unaffordable.

The vote comes after a period of negotiations and debate surrounding the renewal. Republicans have expressed concerns about the cost of the subsidies and proposed alternative approaches, though a consensus has not been reached. The bill’s passage in the House would send it to the Senate for consideration, where its fate remains uncertain given the closely divided chamber.

Millions of Americans currently rely on these subsidies to access affordable healthcare. Experts estimate that the expiration of the subsidies could lead to a significant drop in enrollment in the ACA marketplaces, potentially destabilizing the insurance market. Renewing these subsidies is seen by many as crucial to ensuring that Americans can continue to access essential healthcare services. The bill’s impact will be felt across the nation, particularly in states that expanded Medicaid under the ACA.