US court overturns order releasing pro-Palestinian activist
Khalil, a legal permanent resident in the United States who is married to a US citizen and has a US-born son, was detained by immigration authorities for three months beginning in March.
He faced potential deportation for allegedly posing a threat to US foreign policy interests.
A former Columbia University student who was one of the most visible leaders of nationwide pro-Palestinian campus protests, Khalil was released from custody in June, but faced continued threats of deportation from federal authorities.