States, published in the Bulletin of Cannabis Reform. In it, he estimated the monetary value of the marijuana crop and determined marijuana the largest cash crop in the nation, exceeding the combined values of corn and wheat. Gettman then argues that marijuana prohibition has failed and calls for the legalization and regulation of what he calculated to be a $35.8 billion industry. Lost Taxes and Other Costs of Marijuana Laws In 2007 Gettman authored another special report for the Bulletin of Cannabis Reform, entitled "Lost Taxes and Other Costs of Marijuana Laws." The study examined the effects of marijuana prohibition from an economic perspective and calculated that prohibition costs taxpayers approximately $42 billion in enforcement costs and foregone tax revenues. See also Removal of cannabis from Schedule I of the Controlled Substances Act References External links DrugScience.org, website of the Bulletin on Cannabis Reform The Cannabis Column, written by Gettman 1957 births Living people American cannabis activists Catholic University of America alumni American University School of Public Affairs alumni George Mason University alumni Shepherd University faculty