US moves to reverse Trump on California vehicle-emission rules

(Reuters, 26 Apr 2021) A total of 13 states have adopted California's vehicle-emission rules, and several others are in the process of joining.

The U.S. Environmental Protection Agency (EPA) said Monday it was moving to reverse the Trump administration's 2019 decision to withdraw California's legal authority to set vehicle emissions rules and set zero-emission vehicle mandates.

The action follows the U.S. Transportation Department's announcement last week that it would launch the process to reverse the Trump rule that sought to preempt California's vehicle emissions under the federal government's authority to set Corporate Average Fuel Economy requirements.

"The 2019 decision to revoke the state's waiver to enforce its greenhouse gas pollution standards for cars and trucks was legally dubious and an attack on the public's health and wellbeing," EPA Administrator Michael S. Regan said in a statement.

The EPA in 2013 granted California a waiver for its tailpipe greenhouse gas emissions and zero-emission vehicle regulations. In tandem with the 2019 rule, the agency revoked the waiver under Trump, prompting a court challenge from two dozen U.S. states.

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Reuters, 26 Apr 2021: US moves to reverse Trump on California vehicle-emission rules