Last month the Federal Trade Commission (FTC) and the U.S. Food and Drug Administration (FDA) sent joint warning letters to four companies that manufacture and advertise flavored liquids used in vaping (“e-liquids”). While the letters focus on the nicotine content of the products, they should nevertheless be of interest to cannabis advertisers because they demonstrate a continued regulatory focus on vaping and suggest a framework that may soon apply more broadly to the promotion of retail cannabis products.… More