In the shift toward legalization of marijuana, the Americas have emerged as a leader. This is a remarkable shift for a region that includes some of the world’s leading producers of marijuana, and where the U.S. government has spearheaded a decades-long campaign against cultivation of the substances. Mexican President Enrique Peña Nieto proposed that Mexican citizens could legally possess up to an ounce of pot. Canada’s health minister stood at a United Nations podium and announced that her country would introduce new federal legislation to make cannabis legal by next year.