It’s on Rod Rosenstein to do that.
That little SOB is up to his neck in the conspiracy: he wrote the letter recommending Comey be fired, and then turns around and puts together this little “Get Trump” gang?
He’s the one who mandates Mueller’s scope in the absence of Sessions. So it’s on him to stick to the policy. If Mueller is going where he wants - revenge for his buddy Comey, or as part of some conspiracy - then Rosenstein is duty bound to stop it.
He’s the one that started the party.
“It’s on Rod Rosenstein to do that.”
And there in lies the problem. Rod did not put any limits on what Mueller could investigate. Rush is talking about this now. What Mueller is doing is opposition research for the 2020 election. Mueller can go anywhere with his investigation.