FILE - In an Aug. 21, 2013 file photo, outgoing FBI director Robert Mueller speaks during an interview at FBI headquarters, in Washington. Former FBI Director Mueller addressed graduates at at Tabor Academy, a private college preparatory school in Marion, Mass., on Monday, May 29, 2017, less than two weeks after his appointment as special counsel to oversee an investigation into possible connections between Russia and President Trump’s 2016 election campaign. (AP Photo/Evan Vucci, File)
