DHS Deploys Mass Surveillance System to Track Migrants, Seeks Secrecy

The U.S. Department of Homeland Security operates a large-scale surveillance apparatus to locate and apprehend migrants, and is actively working to prevent public disclosure of its details. The report, based on leaked documents, claims the system aggregates data from multiple sources, raising privacy and civil-liberties concerns. The extent of the system's capabilities and its legal basis remain unclear, as DHS has not commented.