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Trump’s hardball tactics could implode Mexico’s immigration system

In the face of Trump’s bellicose border rhetoric, it is easy to miss the fact that since the 1990s, Mexico steadily has become the United States’ virtual wall keeping out Central American migrants. Four years after the North American Free Trade Agreement came into force in 1994, President Ernesto Zedillo carried out Operation Sealant to stymie the flow of migrants by deploying the armed forces to Mexico’s southern border. Shortly after Mexico’s democratic transition in 2000, President Vicente Fox adopted Plan Sur, which created security belts along the Isthmus of Tehuantepec, as well as along the Pacific and Gulf coasts.