Republican presidential candidate and former Pennsylvania Sen. Rick Santorum waits to speak Feb. 27, 2012, at the Livonia Chamber of Commerce breakfast in Livonia, Mich. (Associated Press)

Photo by: Eric Gay

Republican presidential candidate and former Pennsylvania Sen. Rick Santorum waits to speak Feb. 27, 2012, at the Livonia Chamber of Commerce breakfast in Livonia, Mich. (Associated Press)