Air and water pollution blighted northern Mexican cities long before the North American Free Trade Agreement (NAFTA) was a glimmer on the political horizon. Not surprisingly, when NAFTA became a political reality, environmentalists argued that commercial competition would weaken environmental...

Air and water pollution blighted northern Mexican cities long before the North American Free Trade Agreement (NAFTA) was a glimmer on the political horizon. Not surprisingly, when NAFTA became a political reality, environmentalists argued that commercial competition would weaken environmental...