....... and not bordering National Park Service land.
Why?
They’re getting a little extra-territorial. Several examples of attempts to drive private landholders out so the park service can take it over. Then there are the occasional illegal activities on minimally policed park service land, marijuana growing, that sort of thing. Sharing a border can become an issue.
There have been reports for years that illegals (and I’m sure US citizens) have set up marijuana farms in national parks and will shoot if you get too close.