环保局于2009年废除了将车辆排放与健康风险挂钩的规则,取消了联邦气候条例的依据。 EPA repeals 2009 rule linking vehicle emissions to health risks, removing basis for federal climate regulations.

2026年2月12日, 美国环境保护署(EPA)最后敲定了废止2009年《濒危问题调查》的规则, 该调查将车辆温室气体排放归类为对公众健康和福利的威胁。 On February 12, 2026, the U.S. Environmental Protection Agency (EPA) finalized a rule repealing its 2009 Endangerment Finding, which had classified greenhouse gas emissions from vehicles as a threat to public health and welfare. 此举取消了联邦关于车辆排放和其他来源的法规的法律依据,援引了《清洁空气法》对机构权力的限制和“主要问题理论”。 The move removes the legal basis for federal regulations on vehicle emissions and other sources, citing the Clean Air Act’s limits on agency authority and the "major questions doctrine." 该决定取消了轻度、中度和重度车辆的温室气体标准,并可能导致法律挑战、潜在的国家一级监管,以及增加行业合规不确定性。 The decision eliminates GHG standards for light-, medium-, and heavy-duty vehicles and may lead to legal challenges, potential state-level regulation, and increased compliance uncertainty for industries.