Abortion-rights supporters outside the Supreme Court in January for the annual March for Life. This week North Dakota and Colorado struck down ballot measures restricting abortion, while Tennessee passed an initiative that may result in restricted rights. Alex Wong/Getty Images hide caption

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A fireball goes up at the site of an oil train derailment in Casselton, N.D., in this Dec. 30 photo. The fiery crash left an ominous cloud over the town and led some residents to evacuate. Bruce Crummy/AP hide caption

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President Barack Obama, first lady Michelle Obama, and Standing Rock Sioux Tribal Nation Chairman Dave Archambault II, left, and his wife Nicole Archambault, right, applaud as they watch a Cannon Ball flag day celebration, at the Cannon Ball powwow grounds in Cannon Ball, N.D., on June 13. Manuel Balce Ceneta/AP hide caption

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Sen. Jon Tester, D-Mont., receives a kiss from his grandson Wednesday in Great Falls, Mont. Tester won re-election in a tight contest with Republican Rep. Denny Rehberg. Michael Albans/AP hide caption

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A file image shows the flooded Red River separating Moorhead, Minn., (right) from Fargo, March 2010. National Weather Service forecasters say that the chance for major flooding this year is above 90 percent. Scott Olson/Getty Images hide caption

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