Recently, Missouri passed a law which effectively prevents cities within the state from setting their own minimum wage. Now, I liken this to the fact that the states themselves can set a wage that is higher than the federal minimum wage (it can't be lower than the federal minimum). Does the state have the right to prevent cities from doing this? Is there a precedence for this type of action?
EDIT
So, to clear up confusion. I know the city can't go lower than the state(or federal) minimum wage. St. Louis had set a citywide minimum wage of $15. This new law that MO passed would negate the St. Louis ordinance, and prevent them from doing so again.