I have no doubt Sessions was compromised. The Clinton/Obama clique has something on him (and Trey Gowdy). Enough to get Sessions to recuse himself and Gowdy to drop out of politics.
I agree not only has Sessions done nothing but has kept anything being done about the obvious FBI/FISA Court action to spy on a Presidential Candidate. his recusal is beyond convenient and sure as hell does not prevent him from appointing a SC from getting to the truth of what was done here. He’s comprised no doubt in my mind.
Sessions did what he thought was ethical. The problem is he didn’t foresee Rosenstein running to appoint Mueller. At that point Sessions had taken himself out of it.