Easy fix - we’ve still got those deteriorating nuclear weapons. Make Commiefornia a testing range for our biggest baddest nukes. “Hey, Joe, what’s that strange glow in the western sky?” “Oh, that’s just Commiefornia melting.”
Well I agree with your sentiment and it is what the parasites leading California deserve, there are a lot of good Americans there. Bringing California to heal would involve blockading their ports, putting the major metropolitan areas under siege, and cutting off their water, electricity, fuel, and Internet. Modern life would become impossible and they would surrender.