We can't have 50 different immigration policies but neither can we turn a blind eye to things.
That's it exactly, Lilo. The AZ law invites racial profiling--police aren't going to demand proof of citizenship from my wife or me in a traffic stop--but they will check my neighbor because he's of Mexican background and has a Spanish name. On the other hand, illegal immigration is a serious problem here in AZ, and the Feds have simply dropped the ball.