The Biden administration took steps to limit both oil and gas drilling and mining in Alaska, angering state officials who said the restrictions will cost jobs and make the U.S. reliant on foreign resources.
The measures are aligned with President Joe Biden's efforts to rein in oil and gas activities on public lands and conserve 30% of U.S. lands and waters to combat climate change.
The Interior Department finalized a regulation to block oil and gas development on 40% of Alaska's National Petroleum Preserve to protect habitats for polar bears, caribou and other wildlife and the way of life of indigenous communities.
The agency also said it would reject a proposal by a state agency to construct a 211-mile road intended to enable mine development in the Ambler Mining District in north central Alaska.
The agency cited risks to caribou and fish populations that dozens of native communities rely on for subsistence.
"I am proud that my Administration is taking action to conserve more than 13 million acres in the Western Arctic and to honor the culture, history, and enduring wisdom of Alaska Natives who have lived on and stewarded these lands since time immemorial," Biden said in a statement.