Senator Bernie Sanders argued that most Americans want Medicare for all, while critics say similar systems in other countries produce worse outcomes.
Republicans and Democrats are laying out their visions of health care beyond the Affordable Care Act: a single-payer system or state government control.
The chairman and top Democrat on the Senate Finance Committee announced agreement to extend the Children’s Health Insurance Program but lower the federal share of funds.
Governors from both parties testified before the Senate on behalf of modest changes to the Affordable Care Act, but the White House and some senators have not given up on repeal.
Lamar Alexander of Tennessee, the chairman of the Senate health committee, said Wednesday that he hoped for a deal by the end of next week.