Yes, Mueller was/is a dirty, ideological cop. No doubt.
However, people have various reasons for coming in from the cold, not the least of which is a desire not to spend the rest of one’s life in Leavenworth.
Whether that is the case currently, time will tell.
I will add though, that I think Trump is in a win/win situation. If Mueller is cooperating, then it will be devastating to the left when he indicts them. On the other hand, if he remains dirty, he must know that his every move is being monitored by Sessions, and that he can no longer run roughshod over the system, and will be, in the end, forced to come up with a big fat zero on his investigation. And with all his dirty investigators and an illegal FISA, anything he does produce will be fruit of the poisoned tree and will not hold up to legal scrutiny.
If you believe that Session will actually DO anything, I’d like to sell you the family bridge.
But, does that mean anything any longer?
I really want to trust Jeff Sessions. I've met him and I've always liked him.
But I'm wavering.
I'm not sure about him any longer.
Sessions recused himself from the Russia investigation. He is prohibited from looking into anything Mueller is doing. The only person that can look into what Mueller is doing is Rid Rosenstein. Sessions is totally in the dark, by his own choice.