You’ll recall Independent Counsel Fitzpatrick forced W to personally testify on the Scooter Libby case.
Even when Hil becomes a “private citizen” she may still be forced to testify. That’s when O claims executive privilege.
We all know that he and/or Valerie Jarrett gave the “stand down” order.
If the GOP asked for an independent counsel loud enough, a federal court would appoint one even over Holder’s objection. Court’s have inherent power to do so even in the absence of an IC law.
In other words its not likely the hildabeast will ever have to answer for the four deaths on her watch.