Keystone XL pipeline (2008-2021)
TransCanada's proposal to build a pipeline from Alberta to Nebraska was approved by the Bush administration in 2008, rejected by Obama in 2015, approved by Trump in 2017, and revoked by Biden in 2021. TC Energy canceled the project that year.
Each reversal triggered lawsuits from the opposing side, extending the political fight for over a decade.
The project ultimately collapsed under the weight of the back-and-forth, never carrying a barrel of oil.
Shows how major energy projects can become political footballs across administrations, with the reversals themselves defining the story.
