>> that is not true, the facts do not show that. >> semiautomatic weapons, that's a basic technology. if you want to ban all semiautomatic weapons, that's an enormous prohibition. to have it make any difference you'd have to go and confiscate them -- >> that's not what anyone is saying, no one is saying -- >> it's a contradiction. >> it's not a contradiction. i said to have a conversation, to talk about it, to actually do something about it. i gave you facts about what most americans want. most americans want a ban on semiautomatic weapons. >> that doesn't make -- polling doesn't -- see, there's no magic solution. >> most americans -- >> no one's saying there's a magic solution. this is the problem with gun controllers. you can either say, these are minor things we're suggesting, universal background checks. these would make no difference. or you can actually advocate something large-scale that might make a difference -- >> how do you know it doesn't make a difference? >> okay, what shooting would a universal background -- what