I agree that no laws could have prevented this. I also agree we have some mental health problems that need to be addressed, starting with our decisions in the 70s and 80s to strike down 'involuntary commitment' laws, preventing any adult from being held in a mental institution against their will. That certainly needs to be revisited in light of this tragedy, but I can't honestly say that even this would have prevented the tragedy in CT. I firmly believe we have evil in this world, and sometimes evil will happen, regardless of what we do to prevent it.
As a society, we have to do a lot to help prevent things like this, and I don't know that America wants to do what they need to. We should be raising our children to respect life, respect others, and believe in something greater than self. We need to stop being complacent and allowing them to hold up in room on the Internet night and day without any social interaction or guidance. We need to get involved in their lives and stop allowing culture to bombard them with images of violence and the lackadaisical attitude that things like this don't really matter.
Are we ready to do this? Or do we want to exploit this tragedy to push political agendas and remain mired in our denial?