decoster settled the case and the women were awarded $1.3 million, but decoster denied any wrongdoing >> bergman: in the years following the decoster case, sonia parras became one of the country's leading advocates for abused immigrant women. parras is herself an immigrant from spain, and she was shocked by the working conditions she found in this country. >> this is the land of the dreams and the freedom and where you make your dreams come true. this wasn't supposed to be happening like this here. >> bergman: in 2008, parras began to hear rumors that federal agents were mobilizing near the town of postville, iowa. >> and sure enough, we started tuning into the news, and the raid was happening at that moment. >> federal agents raided this meatpacking plant in iowa on monday... >> those agents are executing a criminal search warrant for people illegally in the united states. >> bergman: the raid would highlight a key question. should federal authorities treat abused undocumented workers as victims or criminals? >> more than 300 people were loaded onto buses and taken away. >> bergman: