What can and can’t a $15 minimum wage do? That’s the question answered by Mark Perry, an American Enterprise Institute scholar and University of Michigan-Flint economics professor.

Perry explains that the minimum wage requires employers to pay their employees a minimum of $15 an hour. That’s it. That’s all that proponents of the policy are calling for, but as Perry notes, there’s a lot the law can’t do, and that’s where the problems occur.