Environmental lawyers say some conservative justices might want to curtail the EPA's authority to regulate power plant emissions beyond the fence line.
Experts across the spectrum agree that the Trump administration's Affordable Clean Energy Rule, which replaced the Clean Power Plan, doesn't pass the test on the basis of critical science, industry experience, or technological feasibility.
A coalition of 21 Democratic-led states sued the Trump administration Tuesday over its decision to ease restrictions on coal-fired power plants, with California's governor saying the president is trying to rescue an outdated industry.
