In April 2025, the United States Postal Inspection Service (USPIS), the law enforcement arm of the U.S. Postal Service, joined a Department of Homeland Security task force aimed at locating undocumented immigrants. This collaboration involves using the USPS’s “mail cover” program, which records information from the outside of letters and parcels, and the Mail Isolation Control and Tracking (MICT) system, which photographs the exterior of every piece of mail processed in the U.S. These tools prov