You assume that travel visas would be created?
It’d be just like Mexico....you just walk across....do your thing....and walk back.
I would guarantee you...that once it splits off...the state of Jefferson will apply for admission into the US. Then at least five different sections would want to break off into their own countries within three years. Palm Springs would probably apply back into the US as a state.
Nope. Lose California and the political clout to hold the border open evaporates.
I do agree that just making the big California cities separate countries makes the most sense. Smaller borders.