How is it possible to outlaw anything, retroactively?
Welcome to obamamerica. Some busy body malcontent with a little bit of power doesn’t like something they ban it and make you a criminal.
People who support banning a scary breed of dog must, by default, support a ban on scary firearms when a liberal Bloomberg type wants them banned. You don’t get to pick and chose when it comes to government tyranny.
High capacity assault dogs...