Rep. Trey Gowdy (R-S.C.) is accusing the Obama administration of a massive cover-up in the deadly Benghazi, Libya, terrorist attack, saying it was “dispersing” witnesses around the country and changing their names in an effort to hide the truth about what happened. In an interview Thursday with Fox News host Greta Van Susteren, Gowdy said the administration is "changing names, creating aliases" of U.S. agents who were in Benghazi on the night of the Sept. 11, 2012, attacks.