Under Trump doctrine, IIRC, Vance could simply kill Trump as an official Presidential act, and the legal presumption would be that it's A-OK. Actually, that's

Under Trump doctrine, IIRC, Vance could simply kill Trump as an official Presidential act, and the legal presumption would be that it's A-OK. Actually, that's an interesting question: does the VP share that same presumption of immunity? If so, then Vance could just do the deed right now and get off Scott free.