Review Of Did Cows Eat Hemp Before 1937 References. 551, enacted august 2, 1937, was a united states act that placed a tax on the sale of cannabis.the h.r. 6385 act was drafted by harry anslinger and introduced by rep.

Yet, hemp is no longer purposefully grown in the u.s. Mexico's prohibition of pot actually came in 1920, a full 17 years before the u.s. He lied to the public and made it extremely restricted in.