Khalil's arrest is the first known deportation effort under Trump’s promised crackdown on students who protested the war in Gaza.

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 as part of U.S. President Donald Trump's promised crackdown on some anti-Israel activists.

Federal agents arrested Mahmoud Khalil, a Palestinian student who played a major role in last year's protests at Columbia University, students said.