Bob Inglis (R-S.C.), Dan Lungren (R-Calif.) and McKinney have all returned to the House after career detours.

ECONOMIST: The New Congress

U.S. Rep. Bob Inglis, who represents the Greenville-Spartanburg area, jumped off the fence to endorse Huckabee last month.

CNN: Huckabee shakes up GOP race in South Carolina

Former Republican Congressman Bob Inglis, for example, proposes implementing a carbon tax and use all of the revenue to reduce other federal taxes.

FORBES: Creating Better Climate Policy: Linking Carbon Taxes to Investments in Clean Energy