so would you agree that citizenship alone is not a reliable indicator of a terrorist threat posed by an individual to the united states? >> correct. most of the people that i talked about that we have opens on are american citizens. >> in fact the department of homeland security we've heard from them, they have an assessment from the office of intelligence analysis concluded that citizenship is unlikely to be a reliable indicator of potential terrorist activity. do you agree with that? >> yes. >> thank you. another matter, chairman grassley and i have worked to address the concerns related to the fbi's hair, fiber analysis testimony has been flawed i think we all accept in the past. investigation began i believe