Comey is now complicit in espionage.
Can one of his subordinates arrest him for obvious gross negligence in performance (or lack thereof) of his duties? He said in front of witnesses and recorded in HD that she is guilty, yet he is not having her arrested. Sounds like gross negligence and an accessory after the fact.
Something tells me that when the FBI discovered that Obama was discovered on the SAP message email chain that is when it was decided to not seek an indictment and Comey took one for the team.