[Pelham]

DOJ IG Michael Horowitz would be my guess. Or some Congressional committees looking at the same things. Either way no one who does know is talking.

[Enchante]

The IG report is purely fact-finding as I understand it. I don’t know if the IG could grant any immunity or not. I would think immunity in exchange for cooperation with have to come from someone with senior prosecutorial power, such as Rosenstein, Mueller, or.... Sessions, ultimately. I don’t know how Priestap could ever be “singing like a canary” unless he has been granted immunity OR a deal for lesser sentencing.

Sundance/ConservativeTreeHouse has done great work assembling this, but I don’t know if there is any public “corroboration” yet.... I have not seen anything that could be called “corroboration” regarding Priestap cooperating. Suggestive nuggets, sure, but where is the actual evidence and corroboration?

[Repealthe17thAmendment]

The Department of Justice has an OPR (Office of Professional Responsibility) which would normally handle the Internal Affairs of the FBI.

This case seems just a bit too big for that office, but if you see the name Robin Ashton suddenly pop up in some of these stories, you'll know that it's being handled in-house.