Mr. Khalil, who helped lead protests at Columbia University against high civilian casualties in Gaza, was arrested by immigration officers and sent to a detention center in Louisiana.

A federal judge blocked the deportation of legal resident Mahmoud Khalil, who was arrested and detained by ICE on Saturday. Amy Greer, an attorney representing the Palestinian student, joins Chris Hayes.

A federal judge has halted the deportation of a Columbia University graduate student who was detained by immigration authorities for his participation in campus protests over the Israel-Hamas war. Judge Jesse Furman of the Southern District of New York issued the order Monday as the government sought to deport Mahmoud Khalil after arresting him outside his apartment over the weekend.