Odd how I specifically asked why OTHER governments can't profile and the thread so far has dwelt on issues of American law. I stipulated at the get-go that we have political problems within our own borders, probably a result of a long history of racism. But in what way does this impair authority in other countries from profiling? Despite what TSORon says, terrorists do not come in "all shapes and sizes". At least not the terrorism which is the enemy in our current war. Who are all these other jihadists who are not mail and Muslim? I've never heard of them? Oh there were the religion zealots who tried to kill people in Japan in subways. I have a strong suspicion that TSORon is not going to encounter them coming through a security position. Same with IRA renegades.

Anyway, perhaps responses could be more germane to my question which is how US legal barriers against profiling affect anything but screening methods within US jurisdiction.