**FILE** Masters champion Mike Weir, from Canada, gets his Green Jacket from Tiger Woods, right, after winning the 2003 Masters at the Augusta National Golf Club in Augusta, Ga., Sunday, April 13, 2003. (AP Photo/Dave Martin)
**FILE** President Obama visited the TransCanada Stillwater Pipe Yard in Cushing, Okla., in March 2012. Embarking on a second term, he faces mounting pressure on a decision he put off during his re-election campaign: whether to approve the proposed Keystone XL oil pipeline between the U.S. and Canada. (Associated Press)
** FILE ** Britain's Prince William heads toward a Sea King helicopter for a training exercise in Dalvay-by-the-Sea on Canada's Prince Edward Island on Monday, July 4, 2011. (AP Photo/The Canadian Press, Paul Chiasson)
** FILE ** Work has begun on the Keystone XL Pipeline near Winona, Texas, but whether it will ever carry oil sands from central Canada to Gulf Coast refineries awaits a decision by President Obama. (Tyler [Texas] Morning Telegraph via Associated Press)
President Obama visited the TransCanada Stillwater Pipe Yard in Cushing, Okla., in March. Embarking on a second term, he faces mounting pressure on a decision he put off during his re-election campaign: whether to approve the proposed Keystone XL oil pipeline between the U.S. and Canada. (Associated Press)
United States' Adam Jones (10) celebrates his run scored against Canada with teammate Jimmy Rollins (11) in the eighth inning of a World Baseball Classic baseball game on Sunday, March 10, 2013, in Phoenix. The United States defeated Canada 9-4. (AP Photo/Ross D. Franklin)
United States' Adam Jones (10) celebrates his run scored against Canada with teammate Jimmy Rollins (11) in the eighth inning of a World Baseball Classic baseball game on Sunday, March 10, 2013, in Phoenix. The United States defeated Canada 9-4. (AP Photo/Ross D. Franklin)
Canada's Jay Johnson, bottom right, and Mexico's Eduardo Arredondo fight during the ninth inning of a World Baseball Classic game as teammates try to break them up, Saturday, March 9, 2013, in Phoenix. (AP Photo/Matt York)
Canada's Jay Johnson, bottom right, and Mexico's Eduardo Arredondo fight during the ninth inning of a World Baseball Classic game as teammates try to break them up, Saturday, March 9, 2013, in Phoenix. (AP Photo/Matt York)
