9/11 bombers from the neck down looked like any other American, and then you look from the neck up, and you see a bunch of flaming middle easterners, no hiding that.You do have a point. If they implemented a ethnicity based search, wouldn't muslims try to conform to look like clean cut Americans? Hell, they are planning on blowing themselves up anyway, something tells me they aren't worried that they dont have to wear their traditional garb...