Republicans worry about healthcare law repeal's impact on health programs

"The administration then diverts discretionary dollars to fund new programs. When the Affordable Care Act is repealed, many important programs like Community Health Centers and the [federal] Immunization program at the Centers for Disease Control will be in jeopardy because their base funding … has been so significantly reduced."

Shelby also raised concerns with the budget's flat-funding of medical research at the National Institutes of Health, at $31 billion. The administration says it is overhauling its NIH grant-making process in order to increase the number of new research grants.

Panel Chairman Tom HarkinThomas (Tom) Richard HarkinTrump should require federal contractors to follow the law Orrin Hatch, ‘a tough old bird,’ got a lot done in the Senate Democrats are all talk when it comes to DC statehood MORE (D-Iowa) also criticized the proposed budget, specifically its $4.5 billion cut to the $15 billion Prevention Fund he championed in the healthcare reform law.

"I don't know when we're going to learn that our mothers were right: an ounce of prevention is worth a pound of cure," Harkin said. "And that's true in healthcare."