Four Columbia University officials, including the university’s president and the leaders of its board, went before Congress on Wednesday to try to extinguish criticism that the campus in New York has become a hub of antisemitic behavior and thought. Over more than three hours, the Columbia leaders appeared to avoid the kind of caustic, viral exchange that laid the groundwork for the recent departures of the presidents of Harvard and the University of Pennsylvania, whose own appearances before the same House committee ultimately turned into public relations disasters. Here are the takeaways from the hearing on Capitol Hill. With three...