Prescient fellow that Sagan. It’s good to know that people like this exist(ed) in all walks of life.
Basically, anyone who thinks our democratic republic of the good ol US of A is immune to the same fate as every other great civilization is a fool, helping doom us to the same fate of history as the Roman empire, for example. It's not pretty, and it won't get any prettier, because human evolution and survival of the fittest is still a thing. Sometimes I wish I'd been my grandparents. Idiocracy from 2006 is not a comedy, not hyperbole.