America is not the world. Individual States in america have state guards, and civilians in america are armed to the teeth. There are active militias in many sta

America is not the world. Individual States in america have state guards, and civilians in america are armed to the teeth. There are active militias in many states. Sure federal government could nuclear bomb a state,but then that has different issues. The united states military couldn't even win in Afghanistan. Many american states are bigger than most European countries! Red state civilians make up most of the armed forces, and mercenary groups. This is all on top of a technological society very very fragile.(https://www.wsj.com/articles/assault-on-california-power-station-raises-alarm-on-potential-for-terrorism-1391570879 https://www.wsj.com/articles/assault-on-california-power-sta...) It only takes very few trained operators to take out grids/city networks and cause millions in damage. I think you very much underestimate the reality of succession in America.