On May 12, 2008, history was written in tiny Postville, Iowa, when the U.S. Immigration and Customs Enforcement agency conducted a raid on a meatpacking plant and arrested 389 immigrants, most of whom were undocumented persons from Guatemala. Beginning the moment of the raid and continuing today, Catholic sisters from the Upper Mississippi Valley played an indispensible role in responding to the immediate and long-range needs of those arrested, their families and the entire community of Postville.