This exchange appears to escalate the FISA wiretap story of Paul Manafort to a whole new level, if the media is interested in pursuing it.
James Clapper was the Director of National Intelligence overseeing the surveillance and intelligence gathering of seventeen different government agencies. He has correctly asserted that if there was a FISA order to wiretap an American citizen he would know about it. CNN has now confirmed that the FBI had just such an order to monitor Paul Manafort. This leaves us with only a handful of conclusions.