Portman, along with three other senators whose states expanded Medicaid, is part of a growing group of senators who have expressed concerns about the bill in its current form because of the way it deals with Medicaid.

“They’re getting it done,” Thune said of the House’s process. “My guess is that kind of the basic sort of components of the bill -– Medicaid reforms and refundable tax credits and things like that -– are all elements that I suspect will be in any package.”

He did not address the fact that many Republicans on both sides of the aisle, including the conservative House Freedom Caucus, have voiced concerns with exactly those provisions.

Sens. Ted Cruz, R-Texas, Rand Paul, R-Kentucky, and Mike Lee, R-Utah, have also said they oppose the bill because of its tax credits. Last week the three members launched a coordinated Twitter offensive, each tweeting, “”2 yrs ago, the GOP Congress voted to repeal Obamacare. That 2015 repeal language should be the floor, the bare minimum. #FullRepeal.”

An eighth senator, Susan Collins, of Maine, says she balked at the fact that the bill would end federal payments to Planned Parenthood because the women’s health service also provides abortions.