Palestinian Columbia protester Mahmoud Khalil released from U.S. immigration detention

NEW YORK — Palestinian activist and former Columbia University graduate student Mahmoud Khalil was released Friday after 104 days in federal immigration detention, becoming one of the most high-profileNEW YORK — Palestinian activist and former Columbia University graduate student Mahmoud Khalil was released Friday after 104 days in federal immigration detention, becoming one of the most high-profile