JACKSON, Miss.—Six of seven Mississippi chicken processing plants raided Aug. 7 were “willfully and unlawfully” employing people who lacked authorization to work in the United States, including workers wearing electronic monitoring bracelets at work for previous immigration violations, according to unsealed court documents.
Federal investigators behind the biggest immigration raid in a decade relied on confidential informants inside the plants in addition to data from the monitoring bracelets to help make their case, according to the documents.
