Yes, we already have to do this at the state level, at the moment. It's in the best interest of a region's government (whether county or state) to make sure the

Yes, we already have to do this at the state level, at the moment. It's in the best interest of a region's government (whether county or state) to make sure the rest of the country is aware of their rules, so they don't have people showing up with incompatible expectations. I don't imagine there will a increased multiplicity of confusing rulesets beyond what we have now, either. Many counties will simply adhere to some standard recommendation from their state, and the rest will copy one of a small number of recommended levels along a spectrum of openness.