Canada’s top court declared key parts of a major environmental law unconstitutional Friday, potentially triggering changes in how the country manages major industrial and energy project approvals.

The Supreme Court of Canada ruled the scoping provisions of the Impact Assessment Act are unconstitutional, providing a win for the oil-rich province of Alberta and oil companies opposed to the act. Prime Minister Justin Trudeau’s Liberal government passed the law in 2019 as one of its signature environmental policies.

“Environmental protection remains one of todays’ most pressing challenges, and Parliament has the power to enact a scheme of environmental assessment to meet …