California has implemented "gun restraining orders": if you feel a relative is likely to shoot people, you can ask a [ judge to order his guns taken away. ]( http://www.theguardian.com/world/2014/oct/01/california-gun-restraining-order-law-signed )
Ссылка: https://stallman.org/archives/2014-jul-oct.html#2_October_2014_%28California%29