Sights and Sounds Along the U.S.-Mexico Border

This slideshow traces a number of key points on the U.S.-Mexico border, from Laredo, Texas, and Ciudad Juarez in the east through Nogales (Arizona and Mexico), and Yuma, Arizona, and then north to Calexico, California and west to Tijuana, Mexico. Topics explored are the physical border and landscape, cross-border trade, security, immigration, drug trafficking and organized crime.