So how many mishandled documents marked classified does it take to have broken the law. Is it a percentage? A fixed threshold? Comey stated in his report: "Separately, it is important to say something about the marking of classified information. Only a very small number of the e-mails containing classified information bore markings indicating the presence of classified information. But even if information is not marked “classified” in an e-mail, participants who know or should know that the subject matter is classified are still obligated to protect it."
Clinton should have been charged and publicly prosecuted. That's what would have happened and has happened to others who did essentially what she did but didn't have the "connections" the people running interference for the Clintons that Hillary has.