A New York federal judge is set to hear pivotal questions in the case of Mahmoud Khalil, a leader of large Gaza solidarity protests at Columbia University who now faces deportation after his arrest by Immigration and Customs Enforcement agents.

A legal battle over an arrested Palestinian activist and Columbia University student that has become a flashpoint of the Trump administration’s immigration policy will play out in federal court, with the U.

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