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US EPA sends California emission rules to Congress as a possible reversal

The US Environmental Protection Agency announced on Friday that it would be sending California's landmark vehicle emissions rules to Congress for possible repeal. This is the latest attempt to stop state tailpipe regulations becoming more strict.

According to the EPA, waivers of California regulations that were approved by Democratic administrations in the past should have been sent directly to legislators under the Congressional Review Act. California's Advanced Clean Cars I, which allows California to set vehicle emission standards that are more stringent than federal standards, is included in the rules.

California has not yet responded to the EPA proposal.

The administration of President Donald Trump has launched a multifaceted effort to prevent California from requiring cleaner vehicles and more electric vehicles. The EPA also enacted regulations that make it easier for automakers sell more gasoline powered cars and?trucks while making EVs more expensive.

California was granted authority to set its own emission standards for cars, trucks and lawn and garden equipment through the four waivers that were sent to Congress to be reviewed. These rules have prompted companies to "produce cleaner electric versions to reduce emissions."

California?won approval for its current vehicle regulations known as Advanced Clean Cars I (ACC I) in 2022, under the then President Joe Biden’s EPA. These rules remain in place.

The U.S. Transportation Department filed a lawsuit against the California Air Resources Board in March. It claimed that the rules of the state governing zero-emission vehicles and emissions from tailpipes are illegal.

California's regulations require automakers sell an increasing number of electric cars and adhere to?increasingly strict limits on tailpipe emission.

These rules are stricter than the ones imposed by Trump's administration, who plans to rollback federal fuel economy regulations.

Trump signed legislation in 2017 to "overturn California's Advanced Clean Cars II regulations that aim to phase-out new gasoline-powered vehicles by 2035."

California claims that the fuel savings consumers will enjoy from the new rules will far outweigh the initial costs of electric vehicles.

Congress revoked California's authority to ban traditional gasoline-powered cars after?2035, after Toyota GM and other automobile manufacturers lobbied Congress for relief from California’s emission regulations.

This was after the EPA had sent Congress a waiver for this program to be reviewed. Many Democratic legislators claimed that waivers were not subject to review under the CRA.

The White House has also weakened federal tailpipe regulations. Congress passed legislation to stop collecting penalties in 2025 for failing to meet vehicle tailpipe standards. This will save automakers hundreds and millions of dollars.

In February, the EPA repealed a scientific conclusion that greenhouse gas emission endangers human health and removed federal tailpipe standards for cars and truck. David Shepardson, David Gregorio (Editing and Reporting)

(source: Reuters)