Mahmoud Khalil, a recent Columbia graduate and Palestinian who is in the country legally and holds a green card, was arrested by ICE over his role in pro-Palestinian activism.

Mahmoud Khalil, a Palestinian activist who helped lead Columbia University's student encampment protests, has been arrested by ICE.

"This is the first arrest of many to come," the president said of Mahmoud Khalil, a green card holder abducted by immigration agents and sent to Louisiana.