federal bureau investigations reopen investigation hillary clinton use private email server exclusively time secretary state.in letter congress fbi director jam b. comey reveal bureau learn email connect investigation write inform investigative team brief yesterday agree fbi take appropriate investigative step design allow investigators review email determine whether contain classify information well assess importance investigation comey wrote.previously comey testify investigation close say recent developments cause supplement testimony.comey give timeline conclusion investigation.house oversight committee chairman jason chaffetz react news twitter.fbi dir inform `` fbi learn existence email appear pertinent investigation `` case reopen jason chaffetz jasoninthehouse october 28 2016 case reopen comment cite comey letter.via breitbart break fbi director jam comey re-opens investigation hillary private server new detail emerge