A federal judge on Friday ordered that Mahmoud Khalil be released on bail, a ruling that could end the monthslong imprisonment of the first pro-Palestinian campus protester detained by the Trump administration. Mr. Khalil, a Columbia University graduate and legal permanent U.S. resident, has spent 104 days in detention, watching as other students targeted by the administration won favorable rulings and were released on bail. He was denied the opportunity to be present when his wife gave...