Uh... mission accomplished, amigo.
No, I don’t mean illegals showing up to bleed the social welfare money, I mean literal military invasion.
Once Cali isn’t getting federal money and no longer getting a tax on things made or imported through it for the rest of the US it’s social welfare state would collapse in under a decade.
Illegals and even legals won’t be rushing there, because th freebies will be gone.
Add to the fact Cali will have to buy water and electricity from either Mexico or the US it will be even further financially strained.
I say, personally let them try. Reality will crush their liberal “paradise” faster then the soviets fell after Reagan engaged then.