Al Nash/Bureau of Land Management via AP hide caption toggle caption Al Nash/Bureau of Land Management via AP A storage yard is seen in Montana for pipe that was to be used in the construction of the Keystone XL oil pipeline. The developer has now canceled the controversial project. Al Nash/Bureau of Land Management via AP The company behind the controversial Keystone XL oil pipeline said Wednesday it's officially terminating the project. TC Energy already had suspended construction in January when President Biden revoked a key cross-border presidential permit. The announcement ends a more than decade-long battle that came to signify the debate over whether fossil fuels should be left in the ground to address climate change.