FILE - In this Feb. 1, 2012 file photo, miles of pipe for the stalled Canada-to-Texas Keystone XL pipeline are stacked in a field near Ripley, Okla. (AP Photo/Sue Ogrocki, File)
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FILE - In this Feb. 1, 2012 file photo, miles of pipe for the stalled Canada-to-Texas Keystone XL pipeline are stacked in a field near Ripley, Okla. (AP Photo/Sue Ogrocki, File)
