Perhaps, there may be a possibility of accessing all the emails, which could prove embarrassing for Obama and Hillary.
What was in emails between hussein and Hillary" What about Biden and Hillery? What sort of pictures did hillary and Huma send each other via email? What reporters did Hillary exchange emails with? How many Clinton Foundation donors also exchanged emails with Hillary? How many different email accounts were on that server? How many different client devices accessed that server? etc, etc, etc.
OK, here's the conspiracy theory to beat all:
Could this all have started with a phone call by David Patraeus? Was he not highly respected, honored even, by everyone that served with him in the Army and CIA?
Maybe the Intelligence Community wants a little pay back.
This has the feel of an Intelligence-driven investigation. They already have all the goods and they are forcing State and DOJ to do their jobs under threat of exposure.
Obama CAN'T get in the way of that.