ArmyCowboy
The Dark Lord
The issue of seccession was settled at Appatmotox.
THAT issue of secession was settled.
Really it was a question of "legal" secession under the Constitution. The concept was that conventions, not legislatures voted for the Constitution (accepting the social contract), so only conventions elected for the purpose could remove a state from the union (repudiation of the social contract). Philosophically, the southern states were correct.
However, they were then introduced to another concept of political philosophy: Might makes right.
So, point really proved is, if you are bad enough to kick the other guy's ass, then it doesn't matter what the "right way is" period. Some bullies on here are proud of that fact. I don't think it's anything to be proud of.
But, the point for the future is, if the other side doesn't have the stones to keep the country together no matter what the cost, then the seceding side wins. If the seceding side can kick the ass of the non-seceding side, then the seceding side wins. If they can't then the other side wins. Simple as that. The court will always back the result. Again see White v. Texas.
No seceeding states are going to be able to defeat the US military, they'll be crushed.
If that's what you want, go for it.