Canada's Ambassador to the US Gary Doer, second right, stands with Sen. Mary Landrieu, D-La., second left, Sen. John Hoeven, R-N.D., left, and American Petroleum Institute (API) President and CEO Jack N. Gerard, right, during a news conference on Capitol Hill in Washington, Tuesday, Feb. 4, 2014, regarding the approval of the Keystone XL pipeline. (AP Photo/Charles Dharapak)
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