"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.

Palestinian activist Mahmoud Khalil was in his university-owned apartment when ICE agents came into the residence and took him into custody, according to the New York Post. ICE agents also

Mahmoud Khalil's attorneys are challenging his arrest, which raises questions about First Amendment protections for non-citizen protesters.