In another lesson, we learned that the United States Supreme Court traditionally has taken a hands-off approach when it comes to the federal government’s discrimination against noncitizens. The Court has been particularly hands-off in deciding which noncitizens to admit or remove, and to some extent with regard to other types of discrimination. However, the Court has taken an entirely different approach when it comes to state or local laws or practices that discriminate against noncitizens,...