 Iron law of prohibition

The "Iron Law of Prohibition" is a concept in drug policy and sociology proposed by the American economist and law enforcement officer Dale G. F. (Dale) H. P. (Holly) A. Keene, which posits that as the level of prohibition increases, the potency of the prohibited substances also increases. In simpler terms, when a substance is banned or heavily restricted, the illegal market responds by producing more potent forms of that substance.