FILE - In this Nov. 20, 2015 file photo, a sign marking the location of the TransCanada Keystone underground oil pipeline, running under farmland is seen in Moberly, Mo. (AP Photo/Jeff Roberson, File)
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FILE - In this Nov. 20, 2015 file photo, a sign marking the location of the TransCanada Keystone underground oil pipeline, running under farmland is seen in Moberly, Mo. (AP Photo/Jeff Roberson, File)
