Clean AirDeregulatory Resources EPA Rejects Colorado’s Regional Haze Plan Over Disputed Coal Plant Closure A quick take on the disapproval of the state’s regional haze SIP revision, including a look at some of the legal arguments raised by commenters against the proposed disapproval. March 18, 2026
Administrative LawNatural Resources Law Federal Court Applies SCOTUS Holding in Corner Post District Court allows challenge and vacates an often-used 1992 Forest Service categorical exclusion in Oregon Wild v. U.S. Forest Service. February 20, 2026
Clean Cars NHTSA Proposes Significantly Weakened Vehicle Fuel Economy Standards A look at NHTSA’s proposal and the issues we’ll be watching as it’s finalized. January 9, 2026
Clean Water Proposed Definition of Waters of the United States Summary of changes to the rule. January 8, 2026
Administrative LawDeregulatory Resources Federal Court Vacates Wind Energy Authorization Pause Case represents a win for challenger states, the wind industry, and for those in favor of limitations on presidential power. December 16, 2025
Corporate Climate Risk Eighth Circuit Says SEC Must Defend or Revise Climate Risk Disclosure Rule October 8, 2025
Clean AirClean CarsDeregulatory Resources Quick Take: Diamond Alternative Energy v. EPA A look at the decision, how this case ended up in the Supreme Court, and how California’s vehicle standards work. June 27, 2025
Administrative LawDeregulatory ResourcesNatural Resources Law Trump Administration Targets Endangered Species Act Habitat Protections The proposal would remove a key safeguard for endangered wildlife by removing the longstanding definition of “harm,” which includes habitat modification or degradation. May 6, 2025
Deregulatory ResourcesMethane Emissions Understanding the Waste Emissions Charge for Methane: What’s Changed and What’s Next? Congress recently voted to eliminate the WEC. We take a quick look at potential implications. March 5, 2025
