California is welcome to leave the Union, but with some stipulations:
There will be no financial support from the US, ever.
The new wall on the Mexican border will be extended to wall out California, too.
The US will accept no refugees or immigrants from CA.
Illegal immigration from CA will be treated as a serious felony with required jail time for those convicted.
They want out, they should be kept out.
In a generation, CA will have the economy & social stability of El Salvador.
And must take Clark County Nevada with you......,,