Clean Air Act Government Regulations 
Legal Planet
FEBRUARY 28, 2025
The issue was whether state plans under the Clean Air Act only need to prevent violation of national air quality standards, or whether they must prevent deterioration in areas where the air is already cleaner than the standards. Coalition for Responsible Regulation v. International Harvester Co. EPA (2012 ).
Legal Planet
MARCH 13, 2025
But the federal government in the United States has failed to address it so far. Aviation is a significant and growing source of greenhouse gas emissions. Opponents will undoubtedly argue that such state-based initiatives conflict with federal law.
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Union of Concerned Scientists
MARCH 18, 2024
Last week, the US Environmental Protection Agency (EPA) finalized updated regulations for certain facilities that emit ethylene oxide (EtO), a colorless, cancer-causing gas. For the first time, the government will regulate fugitive or “unintended” emissions and require permanent total enclosure of sterilization operations.
Legal Planet
AUGUST 26, 2021
This was a case under the Endangered Species Act. The Supreme Court interpreted the statute to place an absolute priority on preserving endangered species, regardless of the impact on the economy or other government goals. This decision made the Endangered Species Act the strongest of the environmental statutes. Michigan v.
Union of Concerned Scientists
JULY 1, 2022
That’s because the case, which was about the nature and scope of EPA authority in regulating carbon emissions from existing power plants, turned on a rule that does not exist. Because while this decision does still recognize EPA’s authority to regulate greenhouse gas emissions, it simultaneously sharply curtails the agency’s ability to do so.
Union of Concerned Scientists
JULY 9, 2024
If governments bypass or undermine science and public comments in policy making, our health could be in jeopardy from increased pollution, cases of foodborne illnesses, politically-driven medicine approvals or disapprovals, and more. When facilities emit less pollution, their regulations require less specific record-keeping and monitoring.
Union of Concerned Scientists
DECEMBER 1, 2022
California has a longstanding leadership role on transportation pollution, and the Clean Air Act grants the state the right to set strong vehicle emissions standards. Over 10,000 UCS supporters chimed in with EPA in support of granting California’s ability to enforce its truck regulations. We need you to do even better!
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