Today the guy that setup Hillary's private server didn't show up to the hearing in front of congress on that issue. Other pled the 5th. Justin Cooper was the Family aide and an aide at the Clinton Foundation. He said he busted up one of the phones and said he extracted the information on it before doing so. So this means someone WITHOUT security clearance had access to classified Information.
Also Congress had to subpoenaed the FBI to get the files on the Clinton investigation. Senator Grassley has seen the documents and said the non classified stuff is mind blowing. So why is the FBI bundling them together and not allowing Congress to see it? Here's two videos, one of Chaffetz at the hearing the other of Grassley. https://www.youtube.com/watch?v=Qct5BBRjC8Y