The ballot initiative campaign to end marijuana prohibition in Arizona is officially underway!  The Campaign to Regulate Marijuana Like Alcohol in Arizona filed an initiative with the Secretary of State’s Office this afternoon that, if approved by voters in November 2016, would legalize marijuana for adults and establish a system in which marijuana is regulated and taxed similarly to alcohol. In summary, the Regulation and Taxation of Marijuana Act would: -       allow adults 21 years of age and…