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Prohibits the federal government from requiring emissions control devices or onboard diagnostic (OBD) systems on motor vehicles or engines, and bars the Environmental Protection Agency from issuing or enforcing such requirements under the Clean Air Act or any other federal law. It also voids existing federal regulations on these devices, removes federal civil and criminal liability for making, selling, importing, buying, using, or modifying vehicles or engines without those devices, and directs vacatur of imprisonment penalties and expungement of records tied to such federal offenses. Affects vehicle and engine manufacturers, importers, sellers, buyers, operators, and the EPA by eliminating federal regulatory authority and penalties related to emissions control devices and OBD systems. The text does not specify implementation timelines or exceptions and operates notwithstanding other federal laws cited in the bill.
The bill eliminates federal emissions requirements and penalties—reducing legal risks and compliance costs for manufacturers, dealers, and some vehicle owners and clearing certain convictions—while substantially increasing air-pollution risks, public health and cleanup costs, and undermining uniform federal enforcement of emissions standards.
Individuals and businesses that buy, sell, import, modify, or use vehicles (including hobbyists, independent mechanics, dealers, and small importers) would be legally allowed to possess and transact in vehicles without emissions controls without federal civil or criminal penalties.
Vehicle manufacturers, importers, and distributors would no longer face federal obligations to install or certify emissions controls, reducing their regulatory compliance costs and potential costs passed to consumers.
People previously convicted or penalized under federal emissions-control laws would have imprisonment penalties vacated and related records expunged, clearing criminal/civil records for those individuals.
The general public—especially urban communities and people with respiratory or cardiovascular conditions—would face worsened air quality and higher health risks as removing emissions controls increases local air pollution.
State and local governments and taxpayers would likely incur higher public health, environmental cleanup, and infrastructure costs from increased pollution and related harms.
State governments, local governments, and interstate pollution regulators would lose a uniform federal enforcement tool, weakening national emissions standards and complicating control of cross-border pollution.
Introduced October 14, 2025 by Cynthia M. Lummis · Last progress October 14, 2025