The booming hemp industry is making officers’ jobs harder because it’s so difficult to differentiate between hemp and weed.

Ben Cort, the author of the book Weed Inc., opposes legalizing marijuana. He says more hemp means more obstacles for law enforcement

“It’s very difficult to separate out illegal high potency marijuana from hemp that may be grown in the same field,” Cort said.

The complications aren’t just at the city level. The Tennessee Department of Investigation said they don’t even have the resources for testing. A spokesman said TBI “does not currently have the capability to quantitatively determine the THC level in plant material and, therefore, does not have the capability to differentiate between hemp and marijuana, but we’re working on it.”

TBI said it doesn’t have resources to test THC levels because they weren’t provided any extra funding for such testing when hemp became legal.