The revision of U.S.-inspired drug policies is urgent in light of the rising levels of violence and corruption associated with narcotics. The alarming power of the drug cartels is leading to a criminalization of politics and a politicization of crime. And the corruption of the judicial and political system is undermining the foundations of democracy in several Latin American countries.
Mr. Cardoso is the former president of Brazil. Mr. Gaviria is a former president of Colombia. Mr. Zedillo is a former president of Mexico.