Will Canada soon be singing 'Oh, Cannabis'?

Trudeau promised that under his leadership Canada would create a system to tax, regulate and sell marijuana, along with stiff penalties for anyone giving pot to children or caught driving while stoned. The Liberal Party's cannabis legalization statement echoes the language used by many U.S. legalization advocates.
http://www.usatoday.com/story/news/world/2015/10/20/canadas-new-governing-party-promises-legalize-regulate-marijuana-sales/74260334/