Joe Biden is set to revoke permits for the controversial Canada-US oil pipeline expansion, putting Justin Trudeau in an awkward position
Trump will reportedly approve two highly controversial oil pipelines as old environmental battle lines are redrawn in the US
NEWS: Senate majority leader Mitch McConnell plans a new vote no later than 3 March, but override looks unlikely
NEWS: No conclusion reached on pipeline as Democrats accuse Republicans of shunning open debate
NEWS: Focus turns to State Department judgement after route of Keystone XL pipeline approved in supreme court
NEWS: Polluting oil pipeline faces more setbacks as Obama threatens to block Congress bill
ANALYSIS: Obama could see Keystone bill on his desk later this month, as Republican controlled Congress pushes for final decision on pipeline
NEWS: Senators back polluting pipeline but fall one vote short of number needed to move legislation to White House
NEWS: Scientists say controversial pipeline would have discernible impact on global markets, lowering prices and boosting demand
NEWS: America’s ranchers and indigenous people descend on Washington to persuade Obama to reject polluting pipeline
Plans to build an oil pipeline from Canada to Texas are being fiercely opposed by campaigners across the US
Final decision from President Obama expected in summer as battle over tar sands pipeline heats up
Fight against Keystone XL to intensify after government report says US-Canada pipeline won’t increase emissions
Thursday’s top five: Green groups anger as US pipeline opens, US court blocks Arctic drilling, scientists turn yeast to oil
Winner of 1997 Nobel Peace Prize tells RTCC pipeline is major threat to the indigenous First Nations people of Alberta
Morning summary: Experts say that the State Department is likely to delay on a Keystone XL Pipeline decision until next year
TV ads funded by billionaire Tom Steyer rebut claims Keystone XL will boost US economy and generate jobs
Morning summary: US President Barack Obama tells the New York Times the 2000 jobs the pipeline would create are a ‘blip’
President says tar sands pipeline will not be approved if it will increase greenhouse gas emissions as all eyes turn to the State Department
A small sample of the one million comments received by the State Department sketches out the core arguments on both sides