The first caller on a telephone town hall with Maryland Rep. Andy Harris, leader of the House’s conservative Freedom Caucus, came ready with a question about the Affordable Care Act. Her cousin’s disabled son is at risk of losing the insurance he gained under that law, the caller said.

“Now she’s looking at two or three times the premium that she’s been paying for the insurance,” said the woman, identified as Lisa from Harford County, Maryland. “I’d love for you to elucidate what the Republicans’ plan is for health insurance?”

Harris, a seven-term Republican, didn’t have a clear answer. “We think the solution is to try to do something to make sure all the premiums go down,” he said, predicting Congress would “probably negotiate some off-ramp” later.

His uncertainty reflected a familiar Republican dilemma: Fifteen years after the Affordable Care Act was enacted, the party remains united in criticizing the law but divided on how to move forward. That tension has come into sharp focus during the government shutdown as Democrats seize on rising premiums to pressure Republicans into extending expiring subsidies for the law, often referred to as Obamacare.

President Donald Trump and GOP leaders say they’ll consider extending the enhanced tax credits that otherwise expire at year’s end — but only after Democrats vote to reopen the government. In the meantime, people enrolled in the plans are already being notified of hefty premium increases for 2026.

As town halls fill with frustrated voters and no clear Republican plan emerges, the issue appears to be gaining political strength heading into next year’s midterm elections.

Even as GOP leaders pledge to discuss ending the subsidies when the government opens, it’s clear that many Republican lawmakers are adamantly opposed to an extension.

“At least among Republicans, there’s a growing sense that just maintaining the status quo is very destructive,” said Brian Blase, the president of Paragon Health Institute and a former health policy adviser to Trump during his first term.

Michael Cannon, director of health policy studies at the libertarian Cato Institute, said he’s working with multiple congressional offices on alternatives that would let the subsidies end. For example, he wants to expand the Affordable Care Act exemption given to U.S. territories to all 50 states and reintroduce a first-term Trump policy that gave Americans access to short-term health insurance plans outside the Affordable Care Act marketplace.