FWIW the Americans Indians didn’t have cannabis and it’s use wasn’t widespread in the USA until the 1920’s when they Mexicans fleeing the Mex Revolution showed up with it and then the blacks picked it up from there.
Peyote has a kick though...
So I guess what I read was about after 1920.
Or it could have been about the Mexican natives, not the Americans? I seem to remember that it was here.
Can’t remember where I read it.
In any case, the point remains the same. Something is controlled when it’s dangerous.