but the terrorists all came through canada. why are we worried about people just trying to work when there are terrorists out there?
Which terrorists are you referring to?
AFAIK, all of the 9/11 hijackers entered the USA directly from overseas through your normal visa processes. None of them came through Canada.
We have had, that I am aware of, one case where a terrorists attempted to enter from Canada and was apprended at the border near here.