Republican presidential candidate, former Pennsylvania Sen. Rick Santorum speaks before the American Israel Public Affairs Committee (AIPAC), in Washington, Tuesday, March 6, 2012. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

Republican presidential candidate, former Pennsylvania Sen. Rick Santorum speaks before the American Israel Public Affairs Committee (AIPAC), in Washington, Tuesday, March 6, 2012. (AP Photo/Charles Dharapak)