2028 Clean Air Act Greenhouse 
Law Columbia
JANUARY 22, 2025
Environmental Protection Agencys (EPA) 2024 greenhouse gas emissions standards for heavy-duty vehicles (the HDV Rule) that went into effect on June 21, 2024. Yesterday, January 21, 2025, the Sabin Center filed an amicus brief on behalf of the National League of Cities (NLC) and the U.S. Conference of Mayors (USCM) in support of the U.S.
Law Columbia
JULY 7, 2025
Elective pay itself is untouched in the OBBB Act, but the aggressive phase-out of and additional restrictions imposed upon the underlying tax credits severely impact eligible entities’ ability to claim them via elective pay. Rescission and repeal of certain federal funding programs The OBBB Act has implications far beyond the tax code.
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Legal Planet
JULY 29, 2025
To recap: The unanimous opinion found that nations of the world have a legal obligation to limit their emissions of greenhouse gases or else pay reparations for the harms of climate change. EPA is renouncing its ability to even regulate greenhouse gases as a threat to human health.
Union of Concerned Scientists
JANUARY 18, 2024
Foremost among these is a legal memo from EPA regarding Treasury’s interpretation and implementation of “lifecycle greenhouse-gas emissions” in 45V. The proposed regulations require a shift to hourly matching for all hydrogen producers in 2028—including those operating before that date who are allowed to use annual matching in the interim.
Union of Concerned Scientists
MARCH 25, 2024
UCS supports Treasury’s proposed temporal-matching requirement, with a phase-in of hourly matching by 2028 with no exemptions for legacy producers. Hourly matching. These criteria are not only well-reasoned but required by a plain reading of the statutory text.
ESA
MAY 6, 2021
will halve its greenhouse gas emissions from 2005 levels. Washington Legislature approves caps on carbon pollution and greenhouse gas emissions, giving big win to Inslee, environmentalists – The Seattle Times. EPA – Proposed Consent Decree, Clean Air Act Citizen Suit. He signed it into law. Indianapolis Star.
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