We hear highly placed officials and political appointees make pronouncements that "America should do everything" in its power to protect itself from terrorists but we have already decided that we are unwilling to do the only thing that would have clear effectiveness in protecting us from terrorists. The effectiveness of protective measures descends as: Removing the wheat ( terrorists ) and the chaff ( innocent members of the group the terrorists belong to ). Perhaps 75-90% of Americans would reject this "you can't sort them with 100% assuredness so evict them all" option. I'd would currently reject this myself which...