Almost No One Is Happy With Legal Weed

The legalization of cannabis in the United States—the biggest change in policy for an illegal substance since Prohibition ended—has been an unqualified success for approximately no one. True, the drug is widely available for commercial purchase, many marijuana-related charges have been dropped, and stoner culture has become more aligned with designer smoking paraphernalia featured on Goop than the bumbling spaciness of Cheech and Chong. But a significant part of the market is still underground, medical research is scant, and the aboveground market is not exactly thriving. Longtime marijuana activists are...