Marketplace Special Report: The Undocumented War

Award-winning reporter Scott Carrier opens a window on the lives of people on both sides of the US-Mexico border. This unique five-part series presents the voices of nervous Mexicans just before they leave for America, the vigilantes patrolling the US side of the border trying to keep them out, a human smuggler, and a woman whose Arizona ranch near the border gives her a front-row seat to the biggest wave of human migration since the early 20th century.