The thing is that they can ban the production of assault weapons but not stop it. This country is the biggest producer of guns in the world. Russia is second. What's not to stop the Russians from hitting up the Mexicans to traffic their guns into the country and have one of the Russians on the inside waiting to receive them and sell them on the black market? The Mexicans already trafficking in drugs, I'm pretty sure they got weapons coming in also. The U.S. may not produce the weapons but they'll still be easily available. The ak47 isn't even American, the Russians make it, and that's a popular one over here. What they need to do is push harsher sentences for those caught with assault rifles instead of worrying about those caught with weed. They can't stop everyone that has an assault rifle but putting pressure on the sellers and those that purchase them may help some. But then again, nobody can predict when one lone lunatic decides to commit these type of shootings.