Enrique Arias-Hierro, 46, of Cuba, had been ordered removed by an immigration judge in 1999 and did not appeal. He was arrested by ICE in early May 2025 and placed on a deportation flight to South Sudan, which a federal judge initially halted, diverting the flight to a U.S. military base in Djibouti where he and other migrants were held for weeks. The U.S. Supreme Court later overturned that judge's order, and Arias-Hierro arrived in South Sudan on July 4, 2025.