Why Did the Post Office Ban Shipments of All Nicotine and Cannabis Devices?

A bill was passed through Congress last year which was mainly aimed at stopping nicotine vaping devices from being mailed. Since the passing of this bill, the USPS has been developing a series of regulations to put the new law into effect but nothing concrete has been put forward until now. Cannabis enthusiasts and advocates had also tried to persuade the USPS not to interpret the law in a way that affects companies in the hemp industry. However, with the new proclamation by the USPS, the agency has classified all devices relating to cannabis and nicotine as unacceptable for mailing.