Ten years ago this month, Portugal rejected the conventional approach to drug policy–more laws, stiffer prison sentences, more police–and went the other way by decriminalizing all drugs, even cocaine and heroin. The drug warriors predicted a disaster. They said drug use would spike and there would be a public health crisis. That did not happen. As Glenn Greenwald showed in a 2009 Cato report, Portugal is doing better than before and in many respects is doing better than other countries in the European Union that take the hard-line, criminal approach to drug use. The buzzword in Washington these days is “evidence-based research.” Well, there you have it.