Aren't these the same sorts of idiots who have all those international rules about who owns what in space? Like the Altairians care.
My recollection is that concepts such as the political disposition of the Moon, etc, are enumerated under various United Nations treaties.
Like the Altairians care.
When the Altarians establish a US -based spaceflight corporation and / or engage in flights from US soil, then they will care. If they don't, then they will find themselves in violation of FAA rules just like anyone else.