riry, you said in your report that the ss officials said the gunman was a former marine, may have had ptsd issues. anything more known about that? >> we know-o 28-year ian david long who did have some contact already with the sheriff's department here, at one point he has been a victim of a battery situation, also police were called to his house back in april for a domestic disturbance. at that point, the records say that he was i rate and irrational but uh not disturbed enough to hospitalize. to what degree any of this may be tied to the fact that heis a veteran of war, at this point, that would beure speculation. we don't know much. those are the details that will be coming out in the coming hours and days. >> woodruff: mary mccarthy reporting for us from thousand oaks, california. mary, such a terrible story. thank you. and another major story tonight: the trump administration has limit the number of non-citizens permitted to claim asylum when crossing the so hern border. explain what this means, i'm joined by our white house corresponnt yamiche alcindor, and alan gomez. he is an i