"This vindicates what Mahmoud has maintained since day one — that the government cannot detain or deport him based on Rubio’s say-so," Ramzi Kassem, a lawyer for Khalil and a law professor at the City University of New York, said in a statement.

The Trump administration said Friday that it will continue to detain Columbia University protester Mahmoud Khalil, after a federal judge ruled that he can't be held based on the U.S. secretary of sta...

Khalil's lawyers said his arrest and attempted deportation violated his right to free speech under the U.S. Constitution's First Amendment.