A sign warns of oil pipeline construction ahead, in Johnsons Corner, North Dakota, September 6, 2016. / AFP / Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
A sign warns of oil pipeline construction ahead, in Johnsons Corner, North Dakota, September 6, 2016. / AFP / Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)