No police powers are being used, so I don't see how that is relivate. Also, the Agencies are not going out of their mandate. OSHA was created to make the workplace safer and by mandating vaccines, they are.
Can OSHA mandate that employers create rules that employees must pass a physical fitness test? Must become vegetarian?
If a business violates the OSHA rules and then doesn't pay the penalties, they are shut down and, if the business continues operating in violation of the regulators, arrested. That's the obvious and implicit statement. The police do that!
The police aren't out raiding houses but the police powers are obviously being used; it's the state's monopoly on violence! It's the government's biggest lever!
Just don't pretend that there isn't a clear threat of violence, when you are making laws that tell people what to do or take their money.
I never said anything about federal laws being invalid. I said they are enforced by police action. Which is obviously true.
But in general, American oligarchs have figured out that private enterprise is a good way to circumvent constitutional and legal limits to their power.
This is also how the surveillance state came into existence. BigTech is a de facto arm of the government while maintaining legal separation. It does the dirty work because it doesn't have to play by the same rules government must. As naive libertarians like to say, it's private so it's all consensual so it's cool, man.