"Under the fundamental rule that no one may be a judge in his own case, the President cannot pardon himself."
Aug. 5, 1974 DOJ opinion, 4 days before Richard Nixon resigned.
It's right there on the DOJ website: https://t.co/G9gIbHNsDl pic.twitter.com/67H9pFzYXJ

— Steven Dennis (@StevenTDennis) June 4, 2018