(FILES)Justin Trudeau, son of former Canadian Prime Minister Pierre Trudeau is seen in this October 12, 2008 file photo during an interview in his campaign office in Montreal. Canada’s Liberal leader and strong candidate for prime minister, Justin Trudeau, admitted on August 22, 2013 that he has smoked marijuana since being elected to parliament, after recently calling for legalizing its use.The eldest son of late prime minister Pierre Trudeau told the Huffington Post that he smoked pot five or six times in his life, the first while on a trip to the Caribbean with university classmates and most recently three years ago with friends over for a dinner party while his children were staying overnight with their grandmother. AFP PHOTO/David BOILYDAVID BOILY/AFP/Getty Images