How about if we put a ton of immigrants all around you?
You mean a ton more? I teach in a district where I often have more students in the room who were born outside America than were born in America. As far as I am concerned they are all legal, because it is not my job to determine their status. While my trust in everyone following immigration laws (from immigrant to government officials) is, according to statistics, more than likely misplaced, I would rather remain trusting. Besides, I love my students, because it is a blessing to have 99.9% of them, and my own learning experience for that .01% remainder.