Rpt: Top Durham aide resigns from investigation into Russia probe amid concern over pressure from A.G. Barr

03:07

Matt Miller tells Ali Velshi that the unexpected resignation of a top Durham aide from his investigation into the origins of the Russia probe and new reporting that A.G. Barr wants to release an interim report on Durham’s findings before the election indicates that there’s “something very rotten going on at the heart of this investigation.” Joyce Vance also joins.