In 2007 the towns of Nogales, Arizona (United States), left, and Nogales, Sonora (Mexico), stand separated by a concrete and steel fence. (U.S. Army/ Gordon Hyde)
In 2007 the towns of Nogales, Arizona (United States), left, and Nogales, Sonora (Mexico), stand separated by a concrete and steel fence. (U.S. Army/ Gordon Hyde)