As stated, on paper yes this is true, however the feds and the executive branch specifically have the ability to supra-legally harass and roadblock localities b

As stated, on paper yes this is true, however the feds and the executive branch specifically have the ability to supra-legally harass and roadblock localities by doing things like revoking or delaying federal funding as leverage or blackmail. Of course these things would be "illegal" but reaching court decisions can take years and in the meantime a locality might be starved out and give in to pressure.