Podcast - Diamond Alternative Energy, LLC v. EPA: The Intersection of Constitutional and Environmental Law
SCOTUS Clean Air Act Cases: What’s New?
Unpacking California's 2024 Zero Emission Fleet Mandate
West Virginia vs. EPA Part II: U.S. Supreme Court Applies the Major Questions Doctrine to limit EPA Regulatory Authority
[Webinar] Growing Greener: Navigating Environmental Laws in the Cannabis Industry
Nota Bene Episode 101: Catching up with Global Climate Regulation with Nico van Aelstyn
Schoenbrod: SCOTUS Ruling Helps EPA Deal With a "Stupid Statute"
Law Prof: The Clean Air Act Needs a Reboot
On August 22, 2025, the Environmental Protection Agency (“EPA”) announced decisions on 175 small refinery exemption (“SRE”) petitions stretching back over the last four years. EPA’s scorecard reads that 63 petitions were...more
On August 20, 2025, Massachusetts Attorney General Andrea Campbell, among several other state attorneys general, testified in opposition to the Environmental Protection Agency’s (EPA) proposal to reverse its 2009 finding that...more
After a few decades of uncertainty and “it’s-alive-it’s-dead-it’s-alive” swings, EPA’s “once in, always in” (OI/AI) policy is once again dead. And this time, it seems very dead....more
The Environmental Protection Agency (EPA) has launched a regulatory rollback campaign implementing President Trump’s energy and deregulatory agenda. These proposed actions represent a fundamental shift toward policies...more
The U.S. Environmental Protection Agency (EPA) on Aug. 1, 2025, published a proposal to repeal all greenhouse gas (GHG) emission standards for light-duty, medium-duty, and heavy-duty vehicles and engines from model year 2012...more
On July 29, the Environmental Protection Agency (EPA) formally proposed to revoke its 2009 “Endangerment Finding,” in which the EPA declared that greenhouse gases contribute to air pollution and endanger public health. This...more
On July 29, the US Environmental Protection Agency (EPA) announced a proposal to rescind its 2009 Endangerment Finding....more
EPA’s controversial “Once in, always in, Rule” (Once in Rule) was recently rescinded under the Congressional Review Act, a statute which gives Congress the authority to overturn agency rules if such action is taken within...more
On July 23, 2025, President Trump issued an Executive Order (the "EO") that directs federal agencies to streamline permitting reviews, provide financial support, and utilize federal land for the expeditious development of...more
Today, August 1, 2025, the US Environmental Protection Agency (EPA) published a controversial proposed rule that, if finalized, would rescind the agency’s landmark 2009 determination that greenhouse gas (GHG) emissions from...more
The U.S. Environmental Protection Agency (EPA) has proposed a major shift in regulatory policy—to rescind the agency’s 2009 “Endangerment Finding” and to repeal all resulting emission standards for new motor vehicles and...more
The U.S. Environmental Protection Agency ("EPA") proposes rescission of the 2009 Endangerment Finding, which underpins greenhouse gas regulation under the Clean Air Act....more
On July 30, 2025, the Environmental Protection Agency (EPA) issued a proposed rule to reconsider the 2009 Endangerment Finding that has served as the foundation for EPA's authority to regulate greenhouse gases (GHGs) for...more
Over the course of the last 15 years, the U.S. Environmental Protection Agency (EPA) has developed a suite of regulations under the Clean Air Act (CAA) built upon EPA’s finding – originally made in 2009 – that greenhouse gas...more
Grants a two-year exemption from compliance with the EPA’s HON Rule for 25 specified chemical manufacturing facilities. Extends implementation of new hazardous air pollutant standards under Section 112 of the Clean Air Act,...more
Because the risks posed by superfund sites pale in comparison to the risks posed by air pollution and broader water pollution issues regulated under the Clean Water Act, I have been and remain deeply skeptical of the Trump...more
Introduction - Continuing the regulatory whiplash over greenhouse gases (GHG) emissions from power plants, the United States Environmental Protection Agency (EPA) recently proposed repealing the Biden administration’s GHG...more
On June 18th, the U.S. Supreme Court issued two rulings determining where challenges to Environmental Protection Agency (EPA) actions under the Clean Air Act must be filed. The Court held challenges to EPA actions that are...more
On June 11, 2025, the U.S. Environmental Protection Agency ("EPA") announced a proposed rule to repeal key amendments to the 2024 Mercury and Air Toxics Standards ("MATS") for coal- and oil-fired electric utility steam...more
The Trump administration is proposing two repeals: one on regulations of power plants and the other on certain amendments to the 2024 Mercury and Air Toxics Standards. The administration believes these regulations have...more
The Congressional Review Act (“CRA”), enacted in 1996, allows Congress to disapprove federal regulations promulgated by government agencies within 60 legislative working days after the rule is submitted to Congress. In order...more
On June 17, 2025, the U.S. Environmental Protection Agency (“EPA”) published a proposed rule to repeal the amendments to the Mercury and Air Toxics Standards (“MATS”) adopted by the Biden administration in 2024. These...more
The US Environmental Protection Agency recently issued a proposed rule and accompanying press release announcing its intent to repeal both the 2015 greenhouse gas emissions standards for new fossil fuel-fired power plants...more
If finalized, the rule would eliminate both Obama- and Biden-era limits on GHG emissions from fossil fuel-fired power plants. On June 11, 2025, the US Environmental Protection Agency (EPA) released a proposed rule under...more
The U.S. Environmental Protection Agency (EPA) moved this Wednesday to erase limits on greenhouse gases from power plants and to weaken restrictions on other hazardous power plant emissions, including mercury, arsenic, and...more