When attorneys for Mahmoud Khalil enter the Thurgood Marshall United States Courthouse in New York on Wednesday, they will have one mission in mind: to get their client, a Palestinian activist, released from an ICE facility in Louisiana and back to New York to be closer to legal counsel and family.

Here's a look at what kind of protections foreign students and green card holders have and what might be next for Khalil.

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.