And they're meaningless anywhere if you can drive to your local Black Market and buy a gun there. Further, how would America's laws with respect to this impact Indian reservations, where one might be able to purchase such an item? All I can say is, since you're in Chicago, just look at the history of prohibition and you might get some idea as to how prohibiting certain types of guns, or all guns, is going to work out for you. Prohibition of alcohol didn't work. Prohibition of guns CERTAINLY isn't going to work. I watched a movie the other day based on a true story about prohibition called Lawless, about the Bondurant boys. It was truly an interesting movie considering what is going on at the moment.
Okay, that was a movie, and the police in that case were more corrupt than the crooks.
If we ever have a gun ban, the police will enforce it vigorously for one good reason. They don't want to be on the business end of one of those guns. They don't want their friends and family to be, either.