In 1942, the U.S. Department of Agriculture created a film to urge farmers to grow more hemp since it was needed in many war-time and civilian products.
Utah, the state that should better, the majority still Mormon and well aware of the Mormon doctrines that God made everything for the use of man, probably under pressure from dog food competitors, banned hemp for dog food.
God man hemp for the use of man.
Read No more pot for pets? Utah prohibits hemp in pet food