On May 12, 2008, 900 federal Immigration and Customs Enforcement officers, armed with military-grade weapons and vehicles, stormed the Agriprocessors meat processing plant in Postville, Iowa, in what was, at the time, the largest federal worksite immigration raid in U.S. history. ICE detained 389 plant workers, most of whom were from Guatemala or Mexico, tearing apart families. Approximately 270 of the detained workers served prison sentences and most were later deported.