Nothing he does will stop an FBI hellbent on violating the law, and then not having to answer for their transgressions.
In my mindset, what the entire cabal did was sedition and treason, all of them right up to and including Obama, and all should be indicted, convicted and publicly dispatched. What they did was so heinous that if they are not brought forth to answer for their extreme crimes against the republic, I guarantee it will happen again. Perhaps as soon as 2020's election.
I fully support the elimination of the FBI and their being folded into Homeland, with no one above first line supervisor being retained. Rift the rest, and good riddance.