How illegal dispensaries are a threat to the legal cannabis industry

7:36 AM ET Fri, 12 July 2019

The booming business of cannabis is what many investors are calling the new gold rush. But with those potential riches comes this reality: there's a much bigger boom in the black market of weed that's crippling legal sales. CNBC's investigates what's really going on inside the unlicensed dispensaries which play by their own rules.