FREE-THE-WEED campaigners speak not of “legalising” marijuana but of “taxing and regulating” it. True to their word, the ballot measure they placed before Colorado’s voters last November, which won the support of 55% of them, was called the Regulate Marijuana Like Alcohol Act and contained provisions for a 15% excise tax. Now that the law is taking shape, the signs are that one of the world’s first fully legal marijuana markets (Washington state also backed legalisation) will have all the taxes and rules anyone could have wished for.