The wife of Mahmoud Khalil, an anti-Israel activist and recent Columbia University student, says she was 'naive' about the risk of his arrest. Khalil, who was born and raised in a Palestinian refugee camp in Syria, was arrested by US Department of Homeland Security agents in Manhattan. His arrest is part of US President Donald Trump's efforts to deport foreign students involved in the pro-Palestinian protest movement. Khalil's lawyers argue that his arrest was a violation of his constitutional free speech rights. The judge has extended the order blocking his deportation while considering the constitutionality of the arrest.