That in itself sounds like more BS propaganda so typical of Trump.
In short: The FBI is not investigating her, the investigation now is about who had access to the server, the problem as always is the media that is not telling the people about that because it is more convenient for the bottom line of corporate media to keep the contest a horse race.
Interesting also for me too, as IMHO it will be just the same as the email and other “scandals” against the Clintons. The right will exaggerate the issues so much that most Americans will see only the gross abuse of power and the madness of the Republicans that when they will brake many rules in order to pursue their target.
People do know about how wrong Captain Ahab was when trying to get Moby Dick.