Former House Speaker Newt Gingrich, campaigning for the Republican presidential nomination, speaks at the Personhood USA forum in Greenville, S.C., on Wednesday, Jan. 18, 2012. (AP Photo/Paul Sancya)

Photo by: Paul Sancya

Former House Speaker Newt Gingrich, campaigning for the Republican presidential nomination, speaks at the Personhood USA forum in Greenville, S.C., on Wednesday, Jan. 18, 2012. (AP Photo/Paul Sancya)