OpinionViewpointsTC Energy’s Dumping of the Keystone Pipeline Is LamentableCopyFacebookXTruthGettrLinkedInTelegramEmailSaveTC Energy's logo on a smartphone in this illustration taken on Dec. 4, 2021. Dado Ruvic/Illustration/ReutersBy Brian Zinchuk8/12/2023Updated: 8/12/2023PrintX 10:00CommentaryAfter 18 years of heartbreak and misery, TC Energy is dumping its foray into oil pipelines.