https://qz.com/1334389/in-a-blow-to-states-rights-trump-proposes-to-yank-californias-electric-car-and-air-pollution-regulatory-authority/

The Trump administration is expected to release a plan this week that halts tightening fuel efficiency standards and revokes California’s unique ability to impose stricter air pollution controls. The move aims to undo some of the top tools in the US for combating climate change promoted by former president, Barack Obama.

Bloomberg reported July 23 that the federal government is planning to freeze vehicle-emissions standards at its 2020 targets through 2026. That would cap fuel economy requirements at 35-miles-per gallon (mpg) rather than 50 mpg for all vehicles in 2025, as laid out during Obama’s presidency.