>> joining me, senator pat toomey of pennsylvania, the republican leader of the last bipartisan effort in congress in attempt to reform gun laws that didn't pass. senator, welcome back to "meet the press," sir. >> good morning, chuck. thanks for having me. >> let me start with your bill and what we know about the shooter down in south florida. there was a lot of information the school system had, there was a lot of information that were called into authorities about the mental stability or instability of this young man. >> right. >> but there's no part of the law that would have mandated that information make it into the background check system. how would your bill deal with that? >> it wouldn't. you know, the fact is the bill that joe manchin and i introduced and still support, chuck, it is not going to solve all problems and never suggest it would. one of the challenges we face is what to do about someone that's clearly mentally deranged but haven't acted out in a way that allows...