Mohsen K. Mahdawi arrived at the U.S. Citizenship and Immigration Services office in Colchester, Vermont, on Monday. A Palestinian student at Columbia University, he hoped that, after 10 years in the U.S., he would pass the test to become a naturalized citizen. Instead, agents from U.S. Immigration and Customs Enforcement arrested him and began the process to deport him to the occupied West Bank. Mahdawi, a leader of the campus protest movement against Israel’s war on Gaza, became yet another green card holder arrested and facing removal. “Mohsen Mahdawi was unlawfully detained today for no reason other than his Palestinian...