Senator Heidi Heitkamp, a Democrat from North Dakota, right, speaks as Senator Mary Landrieu, a Democrat from Louisiana, looks on during a news conference at the U.S. Capitol in Washington, D.C., U.S., on Tuesday, Nov. 18, 2014. The U.S. Senate refused to approve TransCanada Corp.'s $8 billion Keystone XL pipeline after years of a political fight over jobs, climate change and energy security. Photographer: Andrew Harrer/Bloomberg via Getty Images
