- Former Navy SEAL who was shot and killed helped veterans with stress disorder
- Killing in Texas raises new questions about mental health amid gun debate in Washington
- Suspect, a veteran, told police last year he was suffering from post traumatic stress
- Plans in Congress weigh expanding background checks, Obama calls for action on guns
Washington The shooting death of a former Navy SEAL, who spent his post-military career advocating for veterans suffering from post traumatic stress disorder, highlights long-standing differences over gun rights and mental health.