But if Vance is still the vice president then it automatically passes to him to be the leaderWho has even decided that anyway. If Trump passes due to ill health the succession crisis will be a bloodbath. Perhaps not the literally kind like we’ve seen in our own and European history with monarchies but it won’t be pretty. Only peaceful intra-Republican transfer of power would be if Trump is still alive and steps down and hand picks a successor. But that doesn’t seem massively likely at the moment