Fiery charges: Romney, Santorum assail each other in Mesa GOP debate
Ron Paul, Rick Santorum, Mitt Romney, Newt Gingrich
Republican presidential candidates, from left, Rep. Ron Paul, R-Texas, former Pennsylvania Sen. Rick Santorum, former Massachusetts Gov. Mitt Romney and former House Speaker Newt Gingrich stand together for the National Anthem before the start of a Republican presidential debate Wednesday, Feb. 22, 2012, in Mesa, Ariz. (AP Photo/Jae C. Hong)
Scott Smith, Jan Brewer
Arizona Gov. Jan Brewer, right, is greeted by Mesa Mayor Scott Smith prior to the start of a Republican presidential debate among the 2012 Republican presidential candidates Wednesday, Feb. 22, 2012, in Mesa, Ariz. (AP Photo/Jae C. Hong)
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