A federal judge in New York has blocked any efforts by President Donald Trump’s administration to deport Mahmoud Khalil, a Columbia university graduate and Palestinian activist who was arrested Saturday night,

"This is the first arrest of many to come," the president said of Mahmoud Khalil, a green card holder abducted by immigration agents and sent to Louisiana.

Mahmoud Khalil's attorneys are challenging his arrest, which raises questions about First Amendment protections for non-citizen protesters.