Protesters hold a rally with the Standing Rock Sioux tribe in support of a lawsuit against the Army Corps of Engineers and plans for the Dakota Access Pipeline outside the US District Court in Washington, DC, August 24, 2016.
The roughly 1,200-mile-long pipeline would transfer about a half million barrels of oil a day from North Dakota to Illinois. Opponents of its construction worry that a leak or rupture would spell disaster for not only the Standing Rock Indian Reservation, but for all communities along the Missouri River that depend on it for drinking and agriculture. / AFP / SAUL LOEB        (Photo credit should read SAUL LOEB/AFP via Getty Images)