Senators say the legislation can’t pass the upper chamber in its current form, and they are looking to put their own stamp on the bill.
Here are five big changes that senators will be eyeing.
Tax credits
The Senate is likely to change the bill to provide more tax credits to better help low-income people afford health insurance.
Sen. John Thune (S.D.), the No. 3 Senate Republican, is already working on an amendment to ramp up the credits.