Beau Kilmer is a senior policy researcher at the RAND Corporation, where he codirects the RAND Drug Policy Research Center. His research lies at the intersection of public health and public safety, with special emphasis on crime control, substance use, illicit markets, and public policy. Some of his current projects include analyzing the consequences of cannabis legalization; measuring the effect of 24/7 Sobriety programs on DUI, domestic violence, and mortality; and assessing the evidence on and arguments made about implementing heroin-assisted treatment and supervised consumption sites in the US. Kilmer’s publications have appeared in leading journals such as Lancet Psychiatry, New England Journal of Medicine, Proceedings of the National Academy of Sciences, and his commentaries have been published by CNN Los Angeles Times, New York Times, USA Today, Wall Street Journal, and other outlets. His coauthored book on cannabis legalization was published by Oxford University Press.