each state’s constitution, Arizona’s for sure.
One of the purposes of the militia concept was to retain power in the hands of the people but the NG is an instrument of government.
My father was Assistant US Property and Fiscal officer for the FL NG from about 1946 until 1970. I have nothing against the NG but it is not the 2nd amendment militia. The argument that it is the militia is often used to justify disarming Americans. The Military Order of World Wars actually did release a brochure that would support NG action in disarming civilians. I saw the damned thing, held it in my hands.