U.S. domestic drug policy does not carry out its stated goals, and policymakers are well aware of that. If it isn't about reducing substance abuse, what is it about? It is reasonably clear, both from current actions and the historical record, that substances tend to be criminalized when they are associated with the so-called dangerous classes, that the criminalization of certain substances is a technique of social control.
Language and Politics (ed. AK Press, 2004) - ISBN: 9781902593821