It is ludicrous to even speak of “California” leaving the union.
What is somewhat conceivable is that San Francisco, Los Angeles, and some other communities on the Pacific coastline might separate from California and form a new country.
The majority of the state (in terms of land mass) does not support Leftwing craziness.
If the Union is divisible, then California is divisible.
That is correct.
If the Marxist urban areas seceded, they would resort to cannibalism in the dark within a week.