'This case is about more than a risky pipeline and tanker project; it is a major setback for reconciliation,' Tsleil-Waututh Chief Leah George-Wilson said.

Jason Kenney said the decision is another "legal indication" the Trans Mountain expansion has been subject to "extensive and exhaustive consultation."

The dismissal effectively ends a years-long legal battle over the Trans Mountain pipeline approval.

The pipeline remained shut down Sunday, amid cleanup operations after an oil spill at the Sumas Pump Station in Abbotsford.

Trans Mountain said in a statement that construction on the expansion project is progressing well at its terminals and along the right-of-way in B.C. and Alberta with COVID-19 safety measures in place.

Work to lay 50 kilometres of pipe for the Trans Mountain pipeline expansion project is almost half complete in Greater Edmonton.

The Supreme Court of Canada has decided not to hear five challenges from environment and Indigenous groups from British Columbia.

During an emergency debate in the House of Commons Tuesday evening, Conservative MP Cathy McLeod, called the protests a "dress rehearsal" for TMX protests in the future.

The court decision means Trans Mountain construction can continue, although the First Nations whose case was dismissed have 60 days to appeal to the Supreme Court.

Prime Minister Justin Trudeau's government purchased the pipeline and related infrastructure for $4.5 billion in 2018 and construction of the expansion is underway.