The History of Hemp in America has always been entwined with politics. From the very beginning of our republic until today, our federal government has been intimately involved in either extolling it's virtues or demonizing it as a schedule 1 drug.
Jack Herer, the Grandfather of the modern industrial hemp movement was the one who found the government's promotional "How To" film entitled "Hemp for Victory" then authored the classic compendium, "The Emperor Wears No Clothes".
So, the U.S. government knew how vitally important hemp was for the country until the end of WWII. We could have a hemp economy and ecology right now, if it weren't for a few greedy industrial's back then.
The suppression and eradication campaign continues until Nixon's era when he thinks he's finally nailed the coffin lid shut for the Industrialist's.