Ex - presidents of Mexico , Venezuela and Colombia support decriminalization of marijuana . `` If you do n't help those who are dependent , you are half way there because they are going to commit crime to get money and pay for the drug , '' Gaviria said . Leaders urge treatment for addicts , public service speaking on drug prevention . Criminal prosecution should target drug cartels , not users , former leaders say .
Ex - presidents of Mexico , Venezuela and Colombia support decriminalization of marijuana . Leaders urge treatment for addicts , public service speaking on drug prevention . Criminal prosecution should target drug cartels , not users , former leaders say .