- US Rep Jared Polis (D-CO), a staunch advocate for the legalization of medical marijuana, rebuked Michele Leonhart, the head of the DEA, yesterday at a Congressional hearing because she would not say if crack, meth, or heroin are worse than marijuana http://thinkprogress.org/health/2012/06/21/503942/drug-enforcement-agent-wont-admit-that-crack-is-worse-than-marijuana/ 6 comments politics