Trump is rolling back clean-air and clean-water regulations and trying to reduce the size of national parks and monuments so the land can be opened up to drilling and mining. Ryan Zinke does Trump's bidding. Thus:
9 of 12 National Park Service advisers resign, citing differences with Trump Administration, Interior Secretary Ryan Zinke
http://www.upi.com/Top_News/US/2018/...9071516192452/