There’s a new gold rush in America’s west, where decades of marijuana prohibition are coming to an end and Wall Street is moving in. Hundreds of cannabis businesses are aiming to make it an industry to rival beer. With predictions sales and profits will grow by 64 per cent in the next year, thousands of new businesses are entering the market. But there is a growing opposition of voices warning that a new Big Tobacco is being created. One of them is Patrick Kennedy, former Congressman and son of Ted, nephew of JFK, a man who has had his own struggle with addictions. But Cannabis Inc. is a slick operation wooing politicians with the prospect of a billion dollar industry they can tax.