Julia Pierson, Ralph Basham, Todd M. KeilThe embarrassing disclosures about lapses in presidential security just keep coming for the Secret Service. Despite more than three hours of questioning by House lawmakers on Tuesday, Secret Service Director Julia Pierson neglected to mention another security breach that occurred just days before a knife-carrying Army veteran climbed over the White House fence and sprinted into the executive mansion. On Sept. 16, an armed security contractor with three convictions for assault and battery rode on an elevator with President Barack Obama and his security detail at the Centers for Disease Control and Prevention in Atlanta, violating Secret Service protocol. The Washington Examiner and The Washington Post reported the details of that breach just hours after Pierson left a House hearing. More