United States Constitution Article 1 Section 10: Limits on the States.
The final section of Article One outlines the limits on the powers of the States:
Section 10, Clause 1 (Contracts Clause): No State shall enter into any Treaty, Alliance, or Confederation; grant Letters of Marque and Reprisal; coin Money; emit Bills of Credit; make any Thing but gold and silver Coin a Tender in Payment of Debts; pass any Bill of Attainder, ex post facto Law, or Law impairing the Obligation of Contracts, or grant any Title of Nobility.
A so called Republican is backing this.
Yep. Californica has become a loose canon for foreign picking and dependency... and the weak overspent feds which promised to support compliant states is getting no return.