Number 1. Socialist governments around the USA have exist, and still do Cuba for example got to be very lucky tho like Castro. If my plans secede there is only these opinion in which the usa wouldn’t have an enough resources to do it.
1. My separatist moment seceded and the south won the war for independence. The usa would probably be too disorganized and Broken at this point to do anything. I predict the military would coup the American government and probably lead to hardline isolationism.
2. I get elected has president of the United States. This is the path I want to happen, but it’s the most unlikely to happen. If this does happen there literally under my control they couldn’t (unless they did a JFK)
Of course it would still be hard but it isn’t “impossible”