I’ve been noodling this a bit more, and I don’t know how that would work in blue states. Congress passed a law (during the Trump years!) prohibiting Justice from interfering with state marijuana laws, so unless they change that at the federal level, which they would need 60 Republicans in the Senate to do, I assume (unless someone kills the filibuster), I’m not sure how they get there.
So I could see a path to Michigan outlawing weed again, but it’s going to be a tall order to do that in Illinois.
All this assumes, of course, there’s no extralegal way to work around laws on books.