It's often said that we need to keep guns out of the hands of crazy people, but I have no idea if an extensive investigation into a person's psychiatric history is included in background checks. Since medical records are supposedly confidential, how does anyone determine whether a person is sane enough to own a firearm?
And would a restriction apply to anyone who's depressed or bipolar? I know a ton of people on anti-depressants; should they be disqualified? How about anyone who has ever been hospitalized in a psych ward? Or who has ever had the DTs? Or is a graduate of substance-abuse treatment?
How does anyone find out about people's health records, and exactly who should be denied the right to buy a gun?
Years back there was a shooting/hostage incident in a bar near the Cal-Berkeley campus:
http://www.nytimes.com/1990/09/28/us/berkeley-gunman-kills-student-taken-hostage.html
The NY times story is incorrect (no M10) and incomplete.
The shooter had attempted to purchase a semi-auto pistol from a licensed FFL dealer, who after the purchase but during the 15 day waiting period he was contacted by people who knew the shooter. They informed the dealer that the guy was "nuts."
The dealer contacted the Ca. Bureau of Firearms, and was told
he could not rescind the sale or refuse service based on a third party report, and that unless the guy's BG check came up bad, the BoF couldn't stop the sale either.
The dealer, being no fool and having bad feelings about the sale and the buyer, detail stripped the piece and de-fanged it so it would not fire, and released the piece to the buyer after the 15 days.
Shooter came back and reported the gun was defective and would not fire, wanted an exchange, dealer turned the guy down with an explanation of warranty service that would keep the piece out of the guy's hands as long as possible.
Guy found guns elsewhere and did his thing.
Personally, in selling firearms when I was a licensee or in private party transfers I always stick to the MOPAR rule - you don't sell to Misfits, Outcasts, Perverts, ******** or Racists.
It worked for me.
As a matter of policy though, the subject of mental health is so complicated as to make it almost impossible to come up with a set of policies that keep guns away from nuts but doesn't stigmatize individuals who suffer from mental health issues not related to criminal acts or suicidal acts.
California is fairly stringent in their approach, but a nut in Washington may move to California and there's no current protocol that allows California to check Washington state mental health records.
Universal databases may be a help, but also become a problem if individuals suffering from mental issues believe that in getting help they become stigmatized through inclusion in such a system.