That was then. The global situation is different now. I think it benefits the globalists to break up the USA.
As long as globalist-minded people are running each state, e.g., California and New York are already well aligned, removing a few sinecures from pointless federal bureaucracies is easily sold to the public.
I don;t see the same sort of sentiment as was in 1860's with slavery. I doubt there would be violence trying to hang on to any state or region.
I guess a lot depends on which states secede, and if they have nuclear weapons in their possession in those state. 🙂