GOP doctors vow to push healthcare repeal, warn of rationing

Supporters of the healthcare law reject these concerns and say Republicans are using scare tactics for political gain.

The GOP lawmakers spoke on a call with reporters Tuesday. Several expressed disappointment that the latest House-passed bill to fund the government did not repeal healthcare reform.

Gingrey described how some Republican lawmakers are hesitant to back a partial repeal bill, worrying that it would make the rest of the law "palatable."

"But I think we should go full monty at chipping away at it … and weaken it, and weaken it, and weaken it," he said.

Lawmakers are working on a continuing resolution deal that would last through September, and the debt ceiling has to be raised this summer.

Tuesday's call was organized by FreedomWorks, a prominent Tea Party group.