War erupted at Columbia University when lefty faculty and students mobilized to torpedo an ICE recruitment event the school dared to post. The meltdown was triggered by an ad this week on the website of Columbia’s School of Professional Studies for a Feb. 18 US Customs and Border Protection virtual career expo. “Help defend the homeland,” reads the description of the event seeking to recruit for thousands of “mission critical positions,” and promising various Department of Homeland Security agencies in attendance. “This is a unique opportunity to learn more about our mission and how you could contribute to it, making...