Former Speaker of the House Newt Gingrich and former Massachusetts Gov. Mitt Romney chat after finishing a GOP debate in Sioux City, Iowa, earlier this month. Scott Olson/Getty Images hide caption

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Rep. Kevin McCarthy (foreground), the No. 3 Republican in the House, speaks while Majority Leader Eric Cantor listens. McCarthy has made it clear that he wants the health overhaul law repealed. But conservative lawmakers in his hometown of Bakersfield, Calif., are accepting federal money to expand Medicaid. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

At a Republican presidential debate in Las Vegas last month, Newt Gingrich got zinged by rival Mitt Romney for coming up with idea of an individual insurance mandate. Ethan Miller/Getty Images hide caption

itoggle caption Ethan Miller/Getty Images