re: WH tells Tx and Fl that Federal law overrides state law.

The reason there is no law, no executive order nor an OSHA regulations is because the Biden administration decided (as a strategy) to gaslight vaccinations through while preventing lawsuits. If there are no laws, orders or regulations then is very difficult to sue in federal court. The states, businesses, and/or organizations have to say 'NO' until the Biden admin either implements an order, regulation or congress passes a law. Presently, there is no federal legal basis for vaccine mandates. It simply does not exist.