[throw3823423]

In practice, there are no explicit constitutional protections for municipalities. So really, it's all states that can stomp on municipal legislation with impunity if they really felt like it. There might be a state constitution or two on the way, but those are easy to change, and many a state government is capable of either outright ignore constitutional changes brought in by voters, or do some aggressive deception in the drafting of summaries for constitutional propositions as to make them seem to do the opposite of what they really do. See a recent, pro-gerrymandering change to the Missouri constitution, which talked about independent commissions and cutting political donations, but really overrode earlier anti-gerrymandering language, and gave the governor total control over the process.

So broadly, the rights of local governments only go as far as the whims of the state government and the courts anyway, across the board.

[SllX]

There you go making generalizations about 50 separate sovereign entities with 50 different legislatures, constitutions and court systems independent of each other.

But yes, legislatures can change laws on a whim, which is quite a bit more of a process than when I do something on a whim. Given the half-a-hundred entities that are the subject of your comment, some variability in the laws and political processes creating different outcomes depending on their jurisdiction is an expected result.