The testimony of three university presidents before a House committee last week provoked outrage after they suggested that calls on their campuses for Jewish genocide might not have violated their schools’ free speech policies. One of them, Liz Magill, was forced to step down on Saturday as president of the University of Pennsylvania, where I am a faculty member. But their statements shouldn’t have come as a surprise. Congress could have assembled two dozen university presidents and likely would have received the same answer from each of them. This is because the value of free speech has been elevated to...