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September 15, 2026
Mahmoud Khalil sues Columbia University citing ‘hostile environment’ for pro-Palestinian students
By Andrew Lapin | September 15, 2026 3:37 pm
Mahmoud Khalil, the Palestinian Columbia University alum who was detained by the Trump administration last year, is suing his alma mater along with an Israeli dean of the school he attended for facilitating a “hostile environment” for pro-Palestinian students.
Khalil became a national symbol of the campus pro-Palestinian protest movement when he was detained in March 2025 after the government accused him of being aligned with terrorists. On Monday, he filed a civil rights lawsuit in federal court accusing the school of engaging in months-long “deliberate indifference” toward the harassment of pro-Palestinian students on campus, including at the hands of right-wing pro-Israel groups.
He contends that Columbia’s alleged indifference ultimately helped to lead to his 104-day detention by federal immigration authorities, during which he missed the birth of his first child, before being released after a federal judge ruled his detainment was likely unconstitutional. He is joined in the suit by members of the School of International and Public Affairs Palestine Working Group, a pro-Palestinian student group on campus.
“Columbia laid the groundwork for my targeting by the Trump administration through its deliberate indifference and discrimination aimed at intimidating Palestinian students,” Khalil told reporters at a press conference in New York on Monday.
In addition to the university, the suit also names Keren Yarhi-Milo, the dean of the Columbia School of International and Public Affairs, who is Israeli-American, as a defendant. The complaint says that Yahi-Milo had unfairly accused Khalil, while a student in the school, of antisemitism and harassment.
In a statement to the Jewish Telegraphic Agency, Columbia representatives defended Yarhi-Milo in general terms.
“Throughout her time at Columbia and during her service as dean, Dean Yarhi-Milo has worked with and supported students of all backgrounds, including our Palestinian, Arab, and Muslim students,” the statement reads. “The University is grateful for her tireless efforts on behalf of our students and her commitment to a campus free of discrimination and harassment.”
Columbia representatives declined to comment further on the lawsuit but said that “creating a campus environment where every member of our community feels welcome, supported, and safe is fundamental to who we are as a university. It is also a responsibility we take seriously.”