So the supreme court already ruled the president cannot be held accountable for anyone they kill.
The vice president becomes the president instantly if the president dies.
What is preventing any vice president from waiting until day 1 of their parties presidency, and then murdering the president? And then instantly pardoning themself?
The president Can’t be held accountable is one thing. The vp as far as I know (if the vp killed the president) would need certain people in the cabinet to make him president. They’d have to sign off on it.
But of they signed off on it then really at this point nothing stops it