How do they create a Union out of non-contiguous states?
Good question. I would guess the plan is to get the “bigger”, industrial states to secede and weaken the remaining United States. Then some states on the fence might join the new Union too. In the end, they probably won’t get all 50 states. The US might break up to into several regional countries. But the one with CA will probably be the most powerful.
I do think if CA secedes, they will take the entire West coast with them.