The arrest of a Palestinian activist who helped organize campus protests of the war in Gaza has sparked questions about whether foreign students and green card holders are protected against being deported from the U.

U.S. Immigration and Customs Enforcement over the weekend detained a student involved with pro-Palestinian protests at Columbia University.

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