The agency wants Congress to intervene, saying it does not have adequate oversight powers to ensure the safety of the myriad cannabidiol products derived from hemp.
Shops selling weed have proliferated since the state legalized cannabis last year, thriving in confusion over their legality and a lack of enforcement.
Hemp with high THC content given to Holsteins leached into their milk, according to a group of German scientists exploring the food chain for dairy production.