What “payments to the Feds” are you talking about exactly?
I pay my taxes to Uncle Sam. Directly. And I would continue to do so for so long as I am in this state.
Let’s say they tried this. There is an easy, Constitutionally-vetted and approved response:
Marshal law. Arrests of all CA public officials involved in this act of rebellion. Military Governor appointed and habeas corpus suspended. I am sure that there would be no shortage of volunteers from both within and without the state to help enforce Federal Law.
“Marshal law. Arrests of all CA public officials involved in this act of rebellion.”
Who is Marshal?
Why does he get to make laws?