The Biden administration is in talks with tribes, environmental groups and others fighting for dams to be removed from the lower Snake River in the Pacific Northwest.
The demise of coal-fired power plants in Arizona and Kentucky shows how the president, despite promises to restore jobs, failed to counter the forces decimating the industry.
Robert E. Murray, the former chairman of Murray Energy, gave nearly $1 million to climate denial groups and other organizations seeking to undo environmental regulations.
Legal experts say the review of a costly but effective coal-plant restriction is part of a broader strategy to rethink the way the E.P.A. calculates the benefits of its rules.
