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
On Aug. 1, the U.S. Environmental Protection Agency (“EPA”) published a proposed rule in which it proposes to rescind the 2009 Endangerment Finding and repeal all greenhouse gas (“GHG”) emission standards that have been...more
The Environmental Protection Agency ("EPA") proposed a rule that would rescind the 2009 Endangerment Finding, citing a new interpretation of the relevant section in the Clean Air Act ("CAA"), a lack of clear congressional...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
Key Takeaways - What Happened? On July 29, 2025, the U.S. Environmental Protection Agency (EPA) published a proposed rule to rescind the 2009 Greenhouse Gas (GHG) Endangerment Finding (“Endangerment and Cause or Contribute...more
On Tuesday, EPA proposed to repeal its 2009 Endangerment Finding (Repeal Proposal). That’s a big deal, with expansive implications. The 2009 Endangerment Finding determined six greenhouse gases (GHG) are air pollutants that...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 Opinion interprets member states’ responsibilities under treaty and customary international law. In a sweeping and landmark declaration, the Opinion advises that member states have a duty to reduce emissions, regulate...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Protection Agency (EPA) has developed a suite of regulations under the Clean Air Act (CAA) built upon EPA’s finding – originally made in 2009 – that greenhouse gas...more
In 2007, Massachusetts sued the United States Environmental Protection Agency because the state’s government, joining a collection of private organizations, did not think EPA was doing enough under the Clean Air Act (CAA) to...more
The United States Environmental Protection Agency (“EPA”) is submitting for publication in the Federal Register a proposed finding that lead air pollution may reasonably be anticipated to endanger the public health and...more
Earthjustice submitted an August 24th Petition to the United States Environmental Protection Agency (“EPA”) asking that it make an endangerment finding under Section 231 of the Clean Air Act in regards to aviation gasoline...more
As expected, the Trump administration has been actively engaged in efforts to reverse the federal government’s regulatory direction with respect to climate change. In 2017, President Donald Trump announced plans to withdraw...more