Typical idiocy from the Drunken DUchebag.
Let's temporarily forget that his proposal would obviously violate the Second Amendment, and thus could not be done.
Criminals would love his little "Thought experiment." Those criminals who have guns would of course not care about breaking another law and keep what they have (Notice how none of the liberals who propose their "Ban all guns everywhere" ideas offer any possible ways to combat this particular problem, which is especially significant considering that the vast majority of gun- related crimes are committed using guns that were already illegally owned), but this proposal would ensure that not only would none of their potential victims be able to defend themselves, but not even the COPS would be able to effectively stand up to them! Literally the only people with access to guns would be the criminals!
Then again, considering Taverner lives his life in a dope- addled haze, I'm not surprised that particular detail slipped his mind.