I think Montana actually did something very like that.
45-8-360. Establishment of individual licensure. In consideration that the right to keep and bear arms is protected and reserved to the people in Article II, section 12, of the Montana constitution, a person who has not been convicted of a violent, felony crime and who is lawfully able to own or to possess a firearm under the Montana constitution is considered to be individually licensed and verified by the state of Montana within the meaning of the provisions regarding individual licensure and verification in the federal Gun-Free School Zones Act.
History: En. Sec. 1, Ch. 317, L. 1995; amd. Sec. 1, Ch. 29, L. 1997.
Definitely. That’s the loophole in the federal law ~ that you have a license. At the same time seems to me the federal law about which everyone is concerned doesn’t stand up to the standards in Heller v.