HUGELY IMPORTANT QUOTE: "We conducted that investigation, and we kept the office of the acting attorney general apprised of the progress of our work."
He's talking about Rosenstein.
Rosenstein found INSUFFICIENT EVIDENCE OF COLLUSION having seen ALL the evidence in realtime.
Guess who Republicans would call as a witness in an impeachment hearing?
Rosenstein, the man who saw ALL the evidence yet decided against obstruction.
Yeah. Get it?
Now you know why Barr kept Rosenstein on long enough to make the call on obstruction?