A suicide attempt is a clear indication that something is gravely wrong in a person’s life --- most people who die by suicide have a mental or emotional disorder --- suffer from major depression or bipolar (manic-depressive) disorder --- From Mental Health America
A security guard for 9 years.  Think about how much death and destruction he could have caused if he chose a site he was guarding for his suicide --- maybe even Federal buildings.
FBI interviewed him TWICE.
Not a matter of changing the law.  People that are supposed to be protecting us failed --- will the FBI tell us about where they went wrong??
Till then I am keeping my pistol handy!!