 When the U.S. Immigration and Customs Enforcement (ICE) staged a raid at the Postville plant in May 2008, during which nearly 400 illegal immigrant workers were arrested, Rubashkin said that he "had no idea that his workers were illegal".In September 2008, he, his son Sholom Rubashkin, as well as the company's human resources manager and two office employees, were charged for state child labor violations.He was never charged federally, and the state child labor charges against him were dropped in May 2010.