Overview

• Mahmoud Khalil, a recent Columbia University graduate and leader in pro-Palestinian campus protests, was arrested by federal immigration authorities on March 9, 2025.
• The Department of Homeland Security alleges Khalil has ties to Hamas, a designated terrorist organization, though no detailed evidence has been provided publicly.
• President Donald Trump has vowed to expel foreign students involved in what his administration describes as 'pro-terrorist' activities, framing the arrest as part of broader efforts to combat antisemitism on campuses.
• The administration also revoked $400 million in federal funding for Columbia University, accusing it of failing to address antisemitism, with other universities under similar scrutiny.
• The arrest has drawn widespread condemnation from civil rights groups, Columbia faculty, and international organizations, raising concerns about free speech and the targeting of immigrant students.