California"s recently defeated Proposition 19, which would have legalized controlled production and sale of marijuana by people 21 and older, drew opposition from many quarters, including the Mexican and Colombian governments. They argued that legalizing marijuana would undermine their countries" drug policies and the decades-old U.S. "War on Drugs."

In a Nov. 5, 2010, Houston Chronicle op-ed, Latin America Initiative program director Erika de la Garza and drug policy fellow William Martin urge Latin American policymakers to reconsider their commitment to a policy of zero-tolerance prohibition and embrace open discussion about potentially more effective regulations.

Martin also recently published a report with policy recommendations for the United States and Mexico in their collaborative efforts to curb drug trade and related violence.