The simple fact is that regular gun massacres are a problem almost unique to the US, that mass gun ownership (also unique to the US) is the clear cause, that gun regulation would gradually reduce gun ownership and that people and politicians are scared to even talk about it in the immediate aftermath of a massacre of children caused by those unique circumstances because of the power of an American business lobby.
I'm waiting for the information to clear up, but frankly he might be completely right this time and for the most frustrating reasons possible.
A while back I was arguing with your standard pro-gun loons who think gun registration is a crime against the founding fathers. They didn't see any reason why the government should be interested in knowing who has guns, let alone my suggestions of required competence in their use and secure storage. Because from what I'm hearing(and this could be complete bunk) the gun control laws ALMOST worked. The guy couldn't get a gun himself. But his mother had them, so he took one, killed her, and went on this spree.
This is THE scenario that the true gun nuts claim they'd be ready for, someone taking their gun to harm them. But I doubt any of them figured what they'd do if it was family who did it.
Do not pretend the answers are not known, or that they are complex. The solution is unbelievably simple, you just won't enact it.
Unless your answer includes the phrase 'Carpet bombing' I think you're underestimating the number of issues your simple solution would cause in this country. For some people guns are just shy of a way of life, despite the complete lack of a need for one in most people's. If you've watched the main page you've seen the people who are now stockpiling guns and ammo like a second revolution is just waiting to happen. A unilateral ban would simply aggravate it to the point where those pricks would start shooting.
Which is to say, we have a fuckload of domestic terrorists who are winning quite handily.