IMO the old EPA was corrupted and influenced by political agendas and corporate interests which somewhat detracted from its mission of protecting the environment. Even so, it still did a lot of good. It kept big polluters from having free reign at least.
The new EPA under Trump is basically rubber stamping everything the big polluters want to do.
Link: https://www.nytimes.com/2017/05/15/health/pesticides-epa-chlorpyrifos-scott-pruitt.html?smid=tw-nytimesscience&smtyp=cur&_r=1