The Michigan Regulation and Taxation of Marihuana Act (Proposal 1) was passed by the voters of the state of Michigan on November 6, 2018. It is not currently in effect but is scheduled to become law on December 6, 2018.
The language of the new law can be found here.
Some FAQs answered by The Coalition to Regulate Marijuana Like Alcohol can be found here.
Why is marijuana sometimes spelled with an "h" and other times spelled with a "j"?
Municipalities opting out of the Michigan Regulation and Taxation of Marihuana Act (Proposal 1), should email their ordinance/resolution to LARA-BMR-Enforcement@michigan.gov.
Licensing and Regulatory Affairs