Mahmoud Khalil's detention appears to be one of the first efforts by Trump to fulfill his promise to seek the deportation of some foreign students involved in the pro-Palestinian protest movement.

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,

U.S. immigration agents arrested a Palestinian graduate student who has played a prominent role in pro-Palestinian protests at New York's Columbia University, the student workers' labor union said on Sunday.