Hillary doesn't have to kill him. She can impeach him.
The Clintons own the Justice Department. Remember, Bill fired all the federal prosecutors at the start of his first term and replaced them with Clinton cronies. Bush left these maggots in place (a mistake we'll pay for for a very long time), and they've had the run of the place for fifteen years.
Evidence will be "found," old FBI files will be reopened, and enough House members will agree that "the seriousness of the charges" warrents investigation. Ta-da! Obama is out, Hillary is in.
Nah, Arkancide is her only option. Even if she has the evidence, there is no way they'd impeach the First Black President. The blacks would bolt the party, and the Democrat Party would be forever sidelined.
They may own the justice department, but they don’t own Congress, who does the impeachment and removal.