"The Trump administration tried to force this dirty pipeline project on the American people, but they can't ignore the threats it would pose to our clean water, our climate, and our communities", Mr Hayes added.
The ruling is a major victory for environmentalist groups that sued to stop the project and for the Native American tribes that have protested against it for years.
If built, it would transport around 830,000 barrels of crude oil per day from Alberta, Canada, and the Bakken Shale Formation in Montana to facilities near Steele City, Neb.
Mr Obama rejected the scheme in 2015 following a recommendation from the Environmental Protection Agency, citing concerns over it increasing USA dependence on fossil fuel.
Trump granted a permit that allowed energy firm TransCanada to build the controversial Keystone XL pipeline shortly after taking office.
Gophers Women's Soccer Reacts to Making NCAA Tournament
The Ramblers played on ACC team, Notre Dame, and fell 2-1. "So, now we are fighting for our lives", Tom Stone, soccer coach, said. Neither Colby nor Thomas submitted a bid to host the first round, Parsons said. "I think it's a good one for us".
No immediate impact in oil markets is seen, as the pipeline isn't scheduled to come online for years regardless of the ruling.
What did the ruling say?
"The department's 2017 conclusory analysis that climate-related impacts from Keystone subsequently would prove inconsequential and its corresponding reliance on this conclusion as a centerpiece of its policy change required the department to provide a 'reasoned explanation, '" Judge Morris said.
"An agency cannot simply disregard contrary or inconvenient factual determinations that it made in the past, any more than it can ignore inconvenient facts when it writes on a blank slate", Morris wrote.
Olivier Giroud does not need to score, says Maurizio Sarri
Giroud told BT Sport: "It's true, I was hoping to score soon because I came back late from the World Cup and lacked a bit of luck. He added: "Today I was in trouble, too". "It's very important because then we can talk again about this competition in February".
Pres. Trump says government will halt if Dems investigate him
The president also mocked Republicans who did not "embrace" him on the campaign trail , and went on to lose their election races. Republicans devoted their resources to close races, not to trying to prevent Democrats from running up the score in urban areas.