FILE - In this June 21, 2017, file photo, former FBI Director Robert Mueller, the special counsel probing Russian interference in the 2016 election, departs Capitol Hill following a closed door meeting in Washington. It was one year ago Thursday when Robert Mueller, the former FBI director, was appointed as special counsel to take over the Justice Department’s investigation into possible coordination between Russia and Donald Trump’s 2016 presidential campaign. (AP Photo/Andrew Harnik, File)