President Trump and House Democrats are fighting over the Affordable Care Act as hard as ever, with Mr. Trump still vowing to repeal it and House Democrats passing bills to bolster it. And yet both parties have found a health issue they can agree to fight together: surprise medical bills.

The question is how.

Washington finds itself having a genuine policy debate that isn’t driven by party line. The president gave a speech this month about the need for action, standing in front of patients who’d received huge surprise bills. Various lawmakers from the House and the Senate have introduced bills with solutions — all bipartisan. Some of them include elements that might seem unusual for Republican proposals: price setting, if only in limited circumstances.

After a midterm election heavy with talk of health care, everyone wants to be seen as doing something to tackle parts of the system that seem costly and unfair.

Mr. Trump plans to issue an executive order next week, according to The Wall Street Journal, that would bring more transparency to patients about the costs of their care. One of the recent bills, from Lamar Alexander of Tennessee and Patty Murray of Washington, the leaders of the Senate Committee on Health, Education, Labor and Pensions, also includes some provisions that would enhance price transparency in other aspects of patient care.