 Following the revelations in the Libby indictment, sixteen former CIA and military intelligence officials urged President Bush to suspend Karl Rove's security clearance for his part in outing CIA officer Valerie Plame.On November 3, 2005, I. Lewis "Scooter" Libby entered a not guilty plea in front of U.S. District Judge Reggie Walton, a former prosecutor who spent two decades as a judge in the nation's capital.Due to the huge amount of classified material that was requested by Libby's defense, it was speculated that Libby was using graymail as a defense tactic.