He's correct.
Mueller isn't investigating corruption in the FISA process relating to surveillance of Trump campaign and transition team members.
He is chasing - who knows how eagerly at this juncture - a fundamentally empty narrative.
There are four active investigations in the DoJ and another three in the House and Senate underway. Covering State Department and Obama Administration abuse of FISA and unmasking, Hillary Clinton's felonious use of a hidden server, Clinton Foundation pay-for-play criminality and the weaponization of America's most powerful and entrusted national security and LEO institutions against political opponents.
This ain't over, by any means. Obama built the most corrupt and abusive political and bureaucratic regime in American history. And, wouldn't you know it, nothing corrupt gets done around those there Dem parts without the craven and venal Clintons there to cash in.
Bring it on. It's all unraveling.