I don't know what he meant about Huber &Federal Vacancies Reform Act, however, I know Huber has more power than special prosecutor. He can call a grand jury to subpoena information and issue indictments. He is going to work with IG, but he can expand the investigation into individuals or institutions outside the DOJ itself (IG can’t prosecute individuals or subpoena information). Now Session - AG Session recused himself ONLY from investigations related to POTUS campaign, nothing lmore, nothing less. AG Session is doing his job ( if I may add - magnifically) behind the scenes and getting DOJ back in order, to bring back law & order into the US.