Michigan "legalized" a Schedule 1 drug and then decided that they would still issue a CCW to marijuana users. Alaska, which also has "legalized" marijuana has you complete a NICS supplement when applying for or renewing a CCW where you attest that you don't use illegal drugs, including marijuana. This is a federal form, so if you use marijuana and you state you don't use illegal drugs, you have just perjured yourself since marijuana use is illegal under federal law. When Michigan does the same, they will get their NICS exemption back.
Toothless regulation from dc bureaucrats. From 09/2018 =>
______
A new report from the federal Government Accountability Office says that last year, 112,000 people tried to buy guns from licensed dealers but were caught giving false information on the form.
snip
The Bureau of Alcohol, Tobacco, Firearms and Explosives referred just 12,700 cases to field offices for investigation. Of those, the Justice Department prosecuted exactly 12 one of every 9,333 alleged liars.