Columbia University is looking into where to draw the line on political expression on campus, as the school aims to fend off a growing reputation for its anti-American and anti-Israeli activism among professors. In an interview with the Electronic Intifada, an online pro-Palestinian magazine, Mr. Khalidi said his critics have intended to “silence such perfectly legitimate criticism” of Israel “by tarring it with the brush of anti-Semitism.” Read more about Columbia Considers Limits on Political Expression at University