In the case of them actually getting away with secdeeing, just curious, how would the military react? I'm assuming state militias would become the new 'army' for those states, whereas most other states militias and the actual army would defend the remaining USA
But I don't think it would get that far. Not with history and the common knowledge of "oh stuff one button press launches a thermonuclear warhead and levels half of the US, gee wouldn't that sure be a damper on my day, being incinerated while all the air and everything around me literally vaporized.
smashing.