It's more commonly posited to happen the other way around: "The iron law of prohibition is a term coined by Richard Cowan in 1986 which posits that as law enfor

It's more commonly posited to happen the other way around: "The iron law of prohibition is a term coined by Richard Cowan in 1986 which posits that as law enforcement becomes more intense, the potency of prohibited substances increases." [0] Even if you don't believe in the iron law, the fact that people were applying it to marijuana when it was still illegal in all 50 states shows that potency increases didn't begin with legalization as you seem to be implying. [0] https://en.wikipedia.org/wiki/Iron_law_of_prohibition https://en.wikipedia.org/wiki/Iron_law_of_prohibition