Republican presidential candidate Santorum speaks during a rally at the U.S. Space and Rocket Center in Huntsville, Alabama

 
Republican presidential candidate Santorum speaks during a rally at the U.S. Space and Rocket Center in Huntsville, Alabama
Republican presidential candidate and former U.S. Senator Rick Santorum speaks during a campaign rally at the U.S. Space and Rocket Center in Huntsville, Alabama, March 8, 2012. Santorum is campaigning in Alabama before the state's primary election on March 13, 2012. REUTERS/Billy Weeks (UNITED STATES - Tags: POLITICS ELECTIONS)