The White House complained that Columbia University is refusing to help federal agents find people being sought as part of the government’s effort to deport participants in pro-Palestinian demonstrations.

Dozens of University of Chicago students and faculty members rallied on Tuesday in support of a former Columbia University student and pro-Palestinian activist Mahmoud Khalil, who was arrested by federal immigration authorities over the weekend in New York.

Federal agents arrested Mahmoud Khalil, a Palestinian student who played a major role in last year's protests at Columbia University, students said.