“On the other hand, I believe they get most - if not all - of their drinking water from outside of California. They get dry and thirsty, they’ll change their tune.”
Sorry Louie, but that’s simply no true. LA and Arizona share the Colorado River water, but in case you haven’t looked, California’s eastern boundary is the Sierra Nevada Mountains which give us nearly all the water we receive and at the same time are a barrier to bringing in water from outside the state. We’ve been dry and thirsty for several years until this current winter, and we didn’t get any water from any of the surrounding states, except an occasional bottle someone bought and brought in. And FWIW, I hope Trump actually brings the CA sanctuary cities and counties to heel. But there’s no “tune to change” when it comes to water.
There is, however, regarding electricity.
From what I see at this site - especially going by the map - CA has 2 sources derived from the CO River supplying water. The Colorado River Aqueduct & the All American Canal.
It seems there are a lot of legalities involved as to who owns what and who has rights to what.
But I suspect a state can’t wholly own a river which defines part of it’s border but is not within the state’s borders.
The present ongoing Spring 'melt' in the extremely snow packed Sierras Nevada mts may overtax/overrun the CA reservoirs. The CA reservoirs are already at or almost at full capacity. Specifically the Shasta/Oroville systems may present the most problematic "tune to change". Reports are that Moonbeam has presented his fourth request to Washington DC with an unusual personal appearance forthcoming. President Trump may indeed have some valuable 'trade-offs' to offer Moonbeam.