Environmental and indigenous rights activists vowed Friday to continue fighting after Nebraska's supreme court ruled in favor of the state's proposed route for the Keystone XL pipeline.

"From the tar sands region to the Gulf Coast," said the Indigenous Environmental Network in a tweet, "our resistance has shown that we will not give up, we will protect the sacred for the seven generations to come."

Today's #KXL ruling by the Nebraska Supreme Court isn't the end of the fight against this dirty tar sands pipeline. From the tar sands region to the gulf coast our resistance has shown that we will not give up, we will protect the sacred for the seven generations to come.#NoKXL pic.twitter.com/0nM6RQFcwd — Indigenous Environmental Network (@IENearth) August 23, 2019

"The fight to stop this pipeline is far from over."

—Ken Winston, Nebraska Sierra ClubIn the new ruling, the seven justices shot down landowner, environmental, and native groups' concerns over the 2017 approval for a proposed compromise route from the state's Public Service Commission.

"It's disappointing that the court ignored key concerns about property rights and irreparable damage to natural resources, including threats to the endangered whooping crane, but today's ruling does nothing to change the fact that Keystone XL faces overwhelming public opposition and ongoing legal challenges and simply never will be built," said Ken Winston, attorney for the Nebraska Sierra Club, in a statement. "The fight to stop this pipeline is far from over."

Domina Law Group, which represented the plaintiffs, warned, "If history recalls Nebraska at all, it may remember this as its most regrettable decision."

Today, with the Amazon on fire, the Nebraska Supreme Court ruled TransCanada's KXL pipeline route through the State is approved. Nebraska will pass. All governments do. If history recalls Nebraska at all, it may remember this as its most regrettable decision. pic.twitter.com/f2qjw7STOG — Domina Law Group (@DominaLaw) August 23, 2019

Jane Kleeb, founder of Bold Nebraska, also expressed disappointment with the ruling. She called on the state legislature to "fix our broken state laws that give too much power to Big Oil."

"Our water is on the line here," said Kleeb, adding, "It's time for our elected officials to now step up and make it clear that pipelines are not in our public interest."

TC Energy, formerly known as TransCanada and the company behind the pipeline project, welcomed the decision. In a statement, its CEO and president Russ Girling called the ruling "another important step as we advance towards building this vital energy infrastructure project."

Yet its future, as Sierra Club's Winston noted, is uncertain. There are ongoing legal battles over the Army Corps of Engineers' approval of the pipeline as well as President Donald Trump's executive memorandum advancing Keystone XL and another pipeline, the Dakota Access.

"Every day without it is a legal victory for tomorrow, for the people and creatures, and for the Earth itself," tweeted Domina Law. "There is no place, and now is not the time for a crude oil pipeline."

With that frame in mind, groups including Bold Nebraska and the Ponca Tribe of Nebraska are calling on the Democratic presidential candidates to sign the "No KXL Pledge."

The document asks the candidates "to take executive action on Day One to stop any construction on the Keystone XL pipeline—no matter what —and revoke the existing presidential permits issued unilaterally by President Trump for the Keystone XL and Dakota Access pipelines, sending both projects back to relevant federal agencies to undergo legitimate environmental review and tribal consultations."

"The President of the United States," write the groups, "should stand with the sovereign rights of tribal nations, the property rights of farmers and ranchers in rural communities opposed to the pipeline, and everyday Americans who care about a livable planet for our grandchildren who have been fighting together to stop KXL for nearly ten years."