““It estimated that for every $1 million spent on controlling supply in “source countries” in Latin America, there would be a reduction of about 10 kilograms in the total amount of cocaine consumed in the United States. If $1 million were spent trying to intercept cocaine further down the supply chain, on its way to America, that would save more like 20 kilograms. Prevention programs in schools were a bit more effective, saving about 25 kilograms per $1 million.””