Why is Trump so dead set against the environment?

First off just because California wants to do something doesn't mean it's going to make a global impact but it does cause families who then have to live with those decisions because automakers and other places Bow-Wow to California because you are the 6th largest economy should you have been a country but you shouldn't be setting the standards for the rest of the world or at least the rest of the United States if you want to pay $75,000 for a car you must realize there are people who live in the middle part of the country who only make $30,000 a year.