U.S. immigration and military authorities disclosed Monday that immigrants from 27 countries were being held at Guantanamo Bay Naval Station in Cuba, while revealing new details of conditions of confinement and defending the government's authority to transfer and hold immigrants at the military base.

The United States has cleared out the last migrants being held at its naval base at Guantanamo Bay, Cuba, sending them back to the U.S. mainland as they await deportation. Two U.S. defense officials told VOA on Wednesday that 40 detainees,