Canada’s economy could benefit from an influx of toking tourists if weed is legalized, the Liberal Party of Canada says in a new analysis that backs the party’s 2012 policy convention resolution. And Canada’s health-care system and law-enforcement agencies would gain from billions in new tax revenues — money now going to organized crime — as a result of domestic sales of high-quality, low-priced and government-regulated Canadian weed, according to the 38-page paper.