<h1>Federal sweep detains 475 workers at electric-vehicle campus amid probe of alleged illegal hiring, records and visas examined</h1> Federal agents detained 475 people during a multimonth probe into alleged illegal hiring at a large electric-vehicle manufacturing campus in Georgia, an operation described as the agency's largest single-site enforcement action. Most detainees were nationals of one foreign country; authorities say some entered illegally, others had expired visas or were here on nonwork visa waivers. Prosecutors say the identity of the actual hiring company or contractor remains unknown and no criminal charges have been filed yet. Search warrants sought extensive employment, payroll, immigration and corporate records. Detainees may face removal proceedings while diplomatic and local officials raise legal and policy concerns.