Last week, after a long hiatus from the news cycle, a familiar voice graced the airwaves…President George W. Bush speaking at the opening of his Presidential Library and museum in Texas. The event put Bush on the podium, and back in the limelight after years of relative seclusion. The library’s opening also made for an unusual photo op– all five current and previous living presidents – Jimmy Carter, Bush Sr., Bill Clinton, Bush Jr. and Barack Obama – sharing a stage, shoulder to shoulder. Ex-presidents have taken on a number of roles after leaving the oval office throughout American history… here to talk more about life after the oval office is political junkie and NPR political editor Ken Rudin, who you can hear Wednesdays on Talk of the Nation.