U.S. Republican presidential candidates former Massachusetts Gov. Mitt Romney and former Speaker of the House Newt Gingrich (R) discuss a point during the Republican presidential candidates debate in Mesa, Ariz., on Wednesday. The debate, which took place one week before voting begins with contests in Michigan and Arizona, got heated as Romney, Gingrich, former Pennsylvania Sen. Rick Santorum and former U.S. Rep. Ron Paul contended for votes.
