Developing House Republican legislation to repeal the 2010 health care law would also include replacement provisions that are controversial among GOP rank and file, like a refundable tax credit to help individuals purchase insurance and a plan for dealing with Medicaid expansion. Speaker Paul D. Ryan, Energy and Commerce Chairman Greg Walden, and Ways and Means Chairman Kevin Brady on Thursday presented to the Republican Conference their vision for a “repeal plus” health care bill that would undo most of the Affordable Care Act and set up some pieces of a yet undeveloped Republican replacement.