“It makes clear that our understanding of what counts as pollution changes over time, and our agencies and courts need to change with that,” said Margrethe Kearney, a senior attorney with the Environmental Law & Policy Center, which fought to include a consideration of climate change as a factor in the commission’s ruling. Enbridge, which had fought to keep climate change off the table, issued its own statement that did not address the commission’s climate findings. The statement said the company is “pleased” that commissioners rejected other attempts by its opponents to turn the commission’s deliberations into a review of the company’s entire pipeline system.