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President Barack Obama gave a red-carpet welcome for Canadian Prime Minister Justin Trudeau at the White House on Thursday, ending a frosty period in U.S.-Canada relations and celebrating their shared goals on climate and trade.
Obama is hosting Trudeau, the Liberal Party leader who took office in November, for an Oval Office meeting where they will talk about curbing climate emissions from oil and gas fields - a dramatic shift from years of debate over building the Keystone XL oil pipeline, a project Obama blocked last year.
Also on the agenda are plans to expedite travel and trade between the two countries, and shared areas of global concern ranging from Syria to Ukraine.