Between classes, when throngs of students stream into and out of Columbia University ’s campus, the security lines can back up like a TSA checkpoint. There’s a switch-back path of metal fencing that leads into a white tent, where two sets of guards check and then swipe campus ID cards before letting students in and out.

About a week before Mahmoud Khalil was detained and the DHS raids, the Trump administration moved to pull $400 million in federal funding from the New York City university.

Federal agents searched two student residences at Columbia University, its interim president said, a week after immigration agents detained Mahmoud Khalil, a leader of last year's campus protests, who the Trump administration wants to deport.

Two days before U.S. agents arrested Mahmoud Khalil, the Columbia University student and Palestinian activist asked his wife if she knew what to do if immigration agents came to their door. Noor Abdalla,

The wife of Mahmoud Khalil, the Columbia University student and Palestinian activist, said she didn't think she and her husband, a legal U.S. permanent resident, would have to worry about immigration agents coming to their door.