When the federal immigration judge Jamee Comans ruled in favor of allowing the government to deport Mahmoud Khalil, a Columbia University student in the US on a legal visa, her decision was based on “foreign policy concerns” presented by US secretary of state Marco Rubio. It was so shocking that I had to reread the news report several times before I could believe it. Rubio’s claim is based on Khalil’s leadership role in the anti-Israel protests at Columbia University. I didn’t agree with Khalil’s politics when he led the protests and I don’t agree today with his politics, nor even...