08/24/2009 05:12 am ET | Updated May 25, 2011

McCain Campaign Investigated Obama Birth Certificate Rumors

n the final months of the 2008 presidential race, Sen. John McCain's (R-Ariz.) campaign learned of a lawsuit filed in Pennsylvania that asked the state to strip Sen. Barack Obama (D-Ill.) of the Democratic nomination on suspicion that he was not an American citizen.

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