F.B.I. Director James Comey walked right up to the line of recommending a charge of criminal negligence against Hillary Clinton, but he did not cross it. Instead he declared that she was "extremely careless" with the handling of Top Secret information. There goes all of her prior denials about sending and receiving classified information. He further noted that she "should have known that an unclassified system was no place for that conversation." Indeed Comey noted how lax Hillary's State Department was with the whole process of handling classified information. Hardly the hallmark of a good manager.
Although she was not charged criminally, if she were still Secretary of State it would be grounds for impeachment. Further, if any government employee with a Top Secret clearance were so cavalier in handling such information, at minimum that employee would have had their clearance suspended, more likely would be fired.
As a result, this issue ain't going away.