im 100% canadian, I dont live in the US and wondering about your system.
so as i understand your political system, a president can only hold office 2 terms. in Trumps case, he served once already, does that mean he can only serve one more, or is the clock reset and he gets a shot at 8 years?
Assuming he doesn’t change the rules and appoint himself president forever, then the limit is 2 terms, consecutive or not.
Even if a person started their presidential mandate partway through a 4 year cycle (as happened after Nixon stepped down and after Kennedy was shot), it’s still 2 terms, not necessarily 8 years.
If Trump dies in the next 4 years, Vance could serve out the current term and would only be eligible to become president for one additional term.