Errol Mendes, a constitutional and international law expert at the University of Ottawa, says the government faces a long, hard slog in the global arena before it can legalize pot at home.

Legalization, he said, is a growing movement among some countries, particularly in Latin America, but it faces stiff opposition in the United States – including within some quarters of the Obama administration.

 

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http://globalnews.ca/news/2435379/international-treaties-a-concern-before-feds-can-legalize-marijuana/