The Washington Post just published a sweeping 6000-word investigative article about multiple aspects of the fentanyl epidemic. Although the piece gives a very thorough account of multiple facets of our losing battle with illicit fentanyl, it is unfortunate that the authors could not spare a few words to discuss the root cause of the fentanyl plague – the relentless war on prescription painkillers—a perfect example of the Iron Law of Prohibition.