Newt Gingrich spoke out last night on Greta Van Susteren's On the Record, and said, in response to Obama's assertion yesterday that he was not aware of his pastor's anti-American rehtoric, that he believes Obama has a "credibility question."

Later, former House Speaker Newt Gingrich told Fox News’s Greta Van Susteren: “In terms of Senator Obama, I think he has a credibility question.”

Gingrich continued: “Does he honestly expect the nation to believe that for 20 years, longer than 20 years, according to his own testimony, … he didn't notice the anti-American rhetoric? I mean, does somebody seriously believe that in over 800 potential Sunday visits, it never once came up, no one ever mentioned it to him? I think that strains credibility.”