Former senior FBI official Chuck Rosenberg, former Senator Claire McCaskill, former federal prosecutor Berit Berger, and former Congressman David Jolly on how launching an impeachment inquiry could be helpful in compelling former White House counsel Don McGahn's testimony. 

Former FBI Director James Comey and the Deadline White House table discuss what should be asked of former special counsel Robert Mueller during his upcoming public testimony. 

NBC Correspondent Mike Memoli explains his new reporting on how critical a witness former White House counsel Don McGahn was for Robert Mueller in his investigation and how the chairman of the House Judiciary Committee is looking to compel McGahn's testimony. 

Former FBI Director James Comey looks ahead to Robert Mueller's public testimony and tells Nicolle Wallace he believes there is sufficient basis to charge the president with obstruction, but Mueller is too principled to do so.