Perhaps my favourite tv series, maybe even the GOAT tv series: The West Wing. Lead character: Josiah Edward “Jed” Bartlet. What I didn’t know is that there was a real life Josiah Bartlett, who was one of 56 people who signed the American Declaration of Independence. I know, the spellings of the surname are different but this surely can’t have been coincidence. I think that the fact both came from New Hampshire endorses my view that Aaron Sorkin's character was based on the 18th century Governor of that state.
In my ignorance of American political history, if you'd asked me how many people signed that Declaration in 1776, I'd have guessed at somewhere between 4 and 10, knowing (guessing?) the names of perhaps a couple.
The TV show also taught me about the 25th Amendment. Bartlet (the fictional one, as you'll have observed no double t) invoked it when his daughter was kidnapped by terrorists and he decides he is too emotionally compromised to make rationally correct decisions on the situation. He steps down temporarily but there is no Vice President (next in line) at the time because he resigned after a sex scandal, so the next-next in line Speaker of the House Allen Walken, a Republican (Bartlet was a Democrat) became Acting President. Things don't go well and there is inevitable conflict between Walken and Bartlet's Cabinet, leading to them seriously consider invoking another of the 25th Amendment's clauses and deposing him. Of course, it's drama: Zoey is rescued, Jed returns, everyone breathes a sigh of relief and America's constitution is safe.
The actual 25th Amendment was ratified in 1967, four years after Kennedy's assassination meant that VP Lyndon Johnson became President, in accordance with the Constitution, but there was no Vice President for the remainder of Johnson's term.
If this all seems arcane, it was invoked by Ronald Reagan and George W Bush when they had medical procedures which involved anesthesia.