MEXICO CITY - On June 17, 1971, President Richard Nixon stood in front of the White House press corps and made his historic declaration of a new type of war. "Public Enemy No. 1 in the United States is drug abuse," he said. "In order to fight and defeat this enemy, it's necessary to wage a new all-out offensive."

It would be a government-wide effort, and rally the United States's power abroad to stem the supply of drugs. Among the countries targeted was Mexico, which was home to abundant marijuana production and had been resistant to aerial crop spraying.

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