The former president plead not guilty today in a Miami federal court to 37 counts related to the alleged willful retention of highly sensitive documents and attempts to cover up that retention. WATCH NIGHTLINE EPISODES: abc.go.com/shows/nightline ALSO AVAILABLE ON HULU: hulu.tv/2wSmSrZ #abcnews #nightline #donaldtrump #federalcharges #maralago #miami