EPA Administrator Zeldin to Roll Back Key Climate Regulation

EPA Administrator Lee Zeldin is set to announce a significant rollback of climate regulations at an Indiana transportation facility Tuesday. The move will overturn a 16-year-old scientific finding that has underpinned federal authority to regulate greenhouse gas emissions. This draft revision, targeting the so-called endangerment finding, aims to weaken the legal basis for climate rules under the Clean Air Act.
The proposal, which entered White House review in late June, focuses on legal challenges to the original 2009 Obama-era finding rather than disputing the science of climate change. It will be paired with a plan to roll back climate rules for cars and trucks, marking a major shift in federal climate policy.
Zeldin’s announcement is expected to highlight the transportation sector, the largest source of U.S. greenhouse gas emissions. The move could pave the way for the EPA to undo Biden-era climate rules for power plants and oil and gas methane without establishing new standards. However, legal challenges are likely, as courts may scrutinize the repeal of the endangerment finding.
This action reflects the Trump administration’s broader effort to reduce federal authority over carbon emissions, with significant implications for industries and climate regulation.

Published: 7/28/2025