A Land Divided
This 20-foot-high fence between Naco, Arizona, and Naco, Sonora, in Mexico, is part of the fortifications built along the US-Mexico border. But the walls have had little to no effect on the flow of undocumented immigrants. Though illegal border crossings have dropped significantly in the last three years, this is due mainly to the economic crisis in the US and a surge in the Mexican economy, not increased border security. Meanwhile, there has been no slowdown of the flow of illegal drugs over the wall, which continues to generate approximately $25 billion a year for Mexican cartels.