The current administration in charge of the United States is continuing its unhealthy obsession of undoing everything the previous administration achieved:
How vindictive. And bad for the planet. The current president and his party have long talked about this mythical "war on coal", so rolling back these environmental protections is part of that as well as getting revenge on the previous administration.
We all share this one planet, despite what they think. The damage done to it affects us all.