See, that's where I'd have to disagree. The actions of the states affect those around them, being in such close proximity to each other. If New York decides to completely deregulate pollution it can spread to New Jersey and Pennsylvania. If Nevada decides they want to dump toxic waste into Lake Mead then that runs through the river systems of Arizona and California.
Ultimately the problems an individual state could cause is far wider reaching than just that independent state, so federal regulations are necessary. Still, that should be for congress to have the final say, not an appointed agency.
I never said Federal regulation shouldn't be done. It just shouldn't be done by unelected appointees. If Congress feels a need to regulate something then use the powers given to them and regulate ya know? But it's become a work around to avoiding Congress. By fringe Left ideologues. That's precisely why the Dems passed Obamacare like they did setting up the HHS with it's powers. All throught the bill it says something to the effect of 'as head of HHS determines'. Which now gives Trump that power with 'his' appointee.
That's the whole problem with these agencies. It becomes a back and forth Left/Right game now. Whichever Party wins apoints their people and they, all on their own begin writing new laws without the consent of the people. It's not up to them! 'That' is what effects all the States. These whackos create all kinds of problems for farmers & whatever industry the choose to hate at the moment. It's not that Republicans (and I use that term loosely because the Republican Party is almost as establishment as the Dems) but on a whole, Republicans are the only chance of getting back to the Constitution. I like to say 'Conservatives' because half the Republicans are swamp creatures too (RINOS - Republican in name only). That's why it's so much easier for Dems to shove things through and Trump can't. We're still draining the Republican swamp. Democrat voters are not draining theirs. Not sure if theirs will ever get drained though. They've moved so far Left that a lot of their voters are either disgusted with both Parties and now call themselves Independents or they took the red pill and are now Trumpsters.