From the Document: "On January 20, 2021, President Biden signed an executive order revoking the Presidential Permit for the cross-border segment of the Keystone XL [export limited] Pipeline between Canada and Montana. The order asserts that the pipeline 'disserves the national interest' and that leaving the permit in place 'would not be consistent' with the Administration's 'economic and climate imperatives.' The border crossing had been authorized under a 2019 Presidential Permit issued directly by President Trump, superseding a prior Presidential Permit issued by the U.S. State Department in 2017 under delegated presidential authority. President Biden was able to revoke the permit as the 2019 permit stated that it 'may be terminated, revoked, or amended at any time at the sole discretion of the President.' In anticipation of the president's action, the pipeline's developer, TC Energy (previously named TransCanada) announced that the project would be 'suspended.' Although TC Energy said it would 'review the decision ... and consider its options,' it appears that the Keystone XL Pipeline project will not be completed."
CRS Insight, IN11445
Congressional Research Service: https://crsreports.congress.gov/