Mahmoud Khalil, a former Columbia student and pro-Palestinian protest leader, was released from U.S. custody after three months. A federal judge ruled against his deportation, rejecting claims he posed a national security threat. Khalil, a legal U.S. resident, had been arrested in March amid a crackdown on pro-Palestinian activism. His release comes with travel restrictions. His case has drawn criticism of the Trump administration's efforts to silence dissent over the Gaza war.