The Trump administration has weakened key environmental regulations by reversing federal fuel economy standards and repealing EPA rules targeting greenhouse gas emissions. The moves also eliminate exemptions that previously allowed California to enforce stricter vehicle emissions standards than the rest of the country. Critics argue the changes could undermine efforts to reduce pollution and combat climate change, while supporters claim they will ease regulatory burdens on automakers. The shift marks a significant policy reversal from prior federal environmental priorities.


The Trump administration has rolled back federal fuel economy standards, repealed EPA greenhouse gas rules and stripped waivers that let California set its own emissions rules.