Rep. Josh Gottheimer (D-N.J.) joined a group of Jewish Democrats in a visit to Columbia University on Monday as the school grapples with fiery pro-Palestinian protests on campus that have led to mounting criticism of the university’s leadership from all sides. The Democratic members denounced the protests, which they described as antisemitic, with Gottheimer going a step further and threatening university leadership if action is not taken to reign in the demonstrations. “We are all standing here today as Jewish members of Congress to make one thing clear, Jewish students are welcome here at Columbia. And while the leadership of...