FILE - In this June 29, 2018, file photo, pipeline used to carry crude oil is shown at the Superior, Wis., terminal of Enbridge Energy.  The sponsor of the Keystone XL crude oil pipeline says it's pulling the plug on the contentious project, Wednesday, June 9, 2021,  after Canadian officials failed to persuade the Biden administration to reverse its cancellation of the company's permit.  (AP Photo/Jim Mone, File)