Politicians, especially liberal ones, love to pass new laws almost as they love to raise taxes. Since it is already illegal for most youths to have firearms, illegal to fire in town, illegal to carry concealed, illegal to threaten with a weapon, illegal to shot anyone, they still want a new law to make them safer?
Why not just pass a law that says people cannot break existing laws, under penalty of law? That should satisfiy their lust for new law and would do just as much good as any other that dummy suggests.