this was not a band weapon, this semiautomatic weapon was not. efforts to ban those in the past have gone nowhere. people talking about legislating don't seem to understand how they work or whatever. we'll see if this is different but you are right to be skeptical. >> john: you mentioned the fbi dropping the ball on a tip they got in january that the mayor may not have prevented this but at least they would've known about it. the president tweeted about that over the weekend, saying "very sad that the fbi missed all of the many signals sent out by the florida school shooter. this is not acceptable." goes on to say: "they are spending too much time trying to prove russian collusion with the trump campaign. there is no collusion. get back to the basics and make us all proud!" the president was widely criticized for that tweet. did he help himself? >> i'm sure it fired up his