Great question BUT not an exoneration of hillary. I dont know if there is a political reason or maybe she has something on everyone or just plain negligence as the reason trumps admin has done nothing. Again this doesn't make her innocent.
Remember hillary admitted to the server. The FBI confirmed it had top secret information on it. That is a felony.
We know she wiped her server she even brazenly joked about it saying "what like with a rag or something". Another crime since it had been subpoenaed.
She also took hammers to cellphones that had been subpoenaed.
Not top secret, but some were classified. the majority of them were classified after the act.