Doesn't work for me. And why?
Because ALLLLLLLLLLLLLLLLL of the shooters since before Columbine have been apparently sober, sane, and law abiding and had NO RECORDS and no official psychiatric history.
They were sober, sane, and law abiding right up to the MINUTE they mowed down lots of small children and mall shoppers and movie-goers and firefighters.
People: gun nuts go off. They just do. Suddenly.
Arizona, Colorado, Connecticut and Virginia perps all had mental health issues observed by family and acquaintances; are you referencing the Texas Tower killer, son of sam, SoCal McDonalds, Oklahoma City or others?
It's a big national problem. You know that.
I'm not suggesting the sane, sober and law abiding construction is a panacea, in a free and democratic society there are limits on what government should do.
I'm also not suggesting we become a nation of snitches, wherein family or acquaintances should be turned in to LE on a whim. I do believe all of us need to be vigilant and follow our instincts when someone in our family, a friend or acquaintance, suddenly or over time withdraws or has personality changes which concern us. Listen to them, express your concern and try to steer them into seeking medical examinations and counseling.
A good background investigation will uncover red flags which lead the investigator to ask more questions and seek additional data. I know that's not possible as a rule for gun purchase background checks, but it is very effective tool when one is employed recruiting, hiring and eliminating candidates for LE careers.
Thoughtful posts, Wry Catcher, and I'm not denying that the FAMILY of some of these insane shooters noticed big changes, probably the onset of schizophrenia in most cases.
However, in no case did their condition effectively trigger any law-enforcement response or official gun control sanction. Adam Lanza was in a (very slow, apparently!) process of being considered for commitment: I imagine Connecticut is sitting very tightly on the info about how the state dragged its feet about putting him away. And the psychologist treating James Holmes DID apparently notify the police that he was thinking about/planning killing lots of people; they did nothing.
And I could go on and on, I know these cases pretty well. They were mentally ill, but the family hid it or the school didn't report it or the police did nothing or the crazy successfully hid his impairment, as with Harris and Klebold. They all got their guns, they all went shooting and killed lots of people.
What's to be done about these crazies who go shooting and nothing can stop them? It really is a terrible problem.