Yes.
Finally.
+10.
The California rebellion is the most important crisis the US has faced since 1933, maybe since 1860.
Nullification and interposition, both derived from Amendments IX and X, arising from the grave.
I graduated from high school in 1968, so I actually learned stuff about America and her history. None of my kids have ever heard of John C. Calhoun, nullification, interposition, the Kentucky and Virginia resolves, or the Corbin Amendment.
Nothing of value is buried forever, and no cause is ever truly lost.
No President could ever let California go. Should that mean war, then war is what we shall have.
NY, NJ, Illinois, and Maryland (again!) are going to want in on the party, but will not have the geographic or population advantages that California has. It will be a once in a century opportunity for the PRC which they will be unlikely to pass up.
Corwin Amendment. Sorry.