Republican presidential candidate Herman Cain speaks Nov. 12, 2011, at the CBS News/National Journal foreign policy debate at the Benjamin Johnson Arena in Spartanburg, S.C. (Associated Press)

Photo by: RICHARD SHIRO

Republican presidential candidate Herman Cain speaks Nov. 12, 2011, at the CBS News/National Journal foreign policy debate at the Benjamin Johnson Arena in Spartanburg, S.C. (Associated Press)