In January 2025 President Trump issued a series of actions and executive orders, declaring a national emergency at the southern U.S. border and directing the Department of War (DoW) and the Department of Homeland Security (DHS) to expand the illegal alien holding capabilities and facilities at Naval Station Guantánamo Bay (NSGB) to full capacity. OSG is the DoW’s mission to support DHS-led efforts to hold illegal aliens at NSGB.
This report describes the activities of the U.S. Government in support of OSG, specifically, DoW support to the DHS in the processing, detention, housing, and all aspects of illegal alien holding operations at NSGB, during the period of April 1 to June 30, 2026. This report also discusses the planned, ongoing, and completed oversight work conducted by the DoW OIG, State OIG, the DHS OIG, and our partner oversight agencies.