Sort of shows how unnecessary such a list of gun owners is. This list is not in the best interest of the citizens of the US, and frankly shouldn't be allowed. Fails the constitutional test too (not that government types give a s**t about that anymore).
If anything the only list that should exist is those who cannot own, due to some types of convictions, mental illnesses etc. And many convictions should not preclude gun ownership either, so even that list is too big. Wouldn't need a waiting period either, your not on the list, here is your purchase.