Khalil, a 30-year-old Palestinian by ethnicity who was born in Syria, was arrested March 8 in New York and taken to a detention center in Louisiana.

Rather than present specific evidence of wrongdoing against Palestinian Columbia graduate student Mahmoud Khalil, the Trump administration on Thursday filed a brief memo outlining its power to

Khalil's attorneys say the government's case against their client largely rests on a single letter from Secretary of State Marco Rubio alleging that Khalil participated in "antisemitic" and "disruptive activities.