State government agencies can only override county governments when there is specific state law allowing them to do so. State bureaucrats can't legally just order a sheriff to do whatever they want.

It's the other way around: US counties have any legal authority only at the pleasure of their state government, as expressed in its constitution or by statute. They are only immune from state government overrides of their authority to the extent there is a specific law prohibiting the state from overriding their authority.

That is incorrect. States do have the power of preemption, but state officials can only issue directives to local government officials when there is a specific enabling state law. They don't have dictatorial powers.

> State government agencies can only override county governments when there is specific state law allowing them to do so.

I think that's only true for a few old states with some oddities dating back to grants from The Crown.

For everybody else, I'm pretty sure the local government is mostly at the whim of the state government.

Now most states don't do that because it screws things up badly. However, there have been some high profile cases in Texas, for example, where a state judge comes with the Rangers, displaces the local judge and starts arresting everybody.

That is an entirely different and irrelevant example. The Rangers are specifically authorised to arrest people throughout Texas under state law. However they generally cannot issue a legally valid order preventing a county sheriff from arresting a suspect.

Perhaps not, though I am unfamiliar with Ohio's state constitution.

Sure, but it’s not a cut and dry full exoneration of Coalfire, like everybody is claiming. They clearly exceeded the bounds of their contract if this is true.