The fight over the pipeline will be, at least for now, where Biden’s climate commitment will be judged.
The embattled project to carry oil from Canada to Nebraska had been on life support since President Biden’s first day in office and stalled by legal battles for years before that.
While Prime Minister Justin Trudeau shares the incoming president’s climate change agenda, the Canadian leader is also a pipeline proponent.
The project had already been languishing, but the action by Mr. Biden would signal his determination to undo President Trump’s environmental legacy.
She championed the rights of the Oglala Lakota in South Dakota and was a leader in protests at Wounded Knee and oil pipeline sites.
If the permit process is not improved, solar and wind energy efforts may face protracted delays or shutdowns.
The presumptive Democratic nominee has assailed President Trump’s pandemic response and sought to shore up his left flank.
Defeats at three projects reflect increasingly sophisticated legal challenges, shifting economics and growing demands by states to fight climate change.
But the justices stayed the rest of a federal trial judge’s ruling striking down a permit program, allowing construction of other pipelines around the nation.