What is an expungement law?

I asked my friend, who is a lawyer, what an expungement law was? I had read they were expunging the records of people who had underage marijuana records now that marijuana was legal in Muskegon, MI.

He told me that under Michigan’s new expungement law, anyone convicted of marijuana related offense involving conduct that not be illegal after 12/6/2018, can ask to have the conviction set aside.

If they convicted you of possession of marijuana, use of marijuana, or possession of marijuana paraphernalia, you can seek expungement. Expungement is the process by which the state removes your conviction from all public records like it never happens. Many states, like Michigan, have expungement laws on their books when they legalize recreational marijuana. There are some expungement laws for other crimes that have waiting periods before you can petition the court for expungement. Marijuana convictions hold no waiting period. He asked if I had an underage or other marijuana conviction that I was worried about. I didn’t think I had a conviction from when I was caught smoking marijuana at sixteen, but I wanted to check. My dad’s friend, a police officer, found me and my friends sitting behind an old barn, and took us all home. We were lucky we were in Muskegon, MI, and not in New York City. I’m not sure if dad ever paid a fine for my underage marijuana use, because he said nothing. I got a huge punishment at home. I couldn’t go out with my friends until I was eighteen, lost a phone, and was escorted whenever I left the house. Maybe a conviction would have been easier.
Weed Store Muskegon MI