Argument: Many countries are signatories to treaties prohibiting marijuana
- "Against the legalization of drugs". Drug Watch International. Retrieved 2.11.08 - "The United States and many countries would be in violation of international treaty if they created a legal market in cocaine, marijuana, and other drugs. The U.S. is a signatory to the Single Convention on Narcotics & the Convention on Psychotropic Substances, and has agreed with other members of the United Nations to control and penalize drug manufacturing, trafficking, and use. 112 nations recently reaffirmed their commitment to strong drug laws."