How California keeps blocking Trump's environmental rollbacks

California's sweeping deal with four major automakers last week to boost gas mileage standards and cut tailpipe emissions wasn't the first time the Golden State has outmaneuvered the Trump administration, which has been planning instead to loosen pollution rules for car companies nationwide.

source https://www.lifetechnology.com/blogs/life-technology-news-blog/how-california-keeps-blocking-trumps-environmental-rollbacks