Leave it to the "experts" who know much better than politicians what to do.
But politicians, or EPA administrators, can always find "experts" who will give them the policies they want to enforce.
The reality Progressives are unwilling to acknowledge: there is no "settled science" and administrators are as subject to corruption, temptation, and abuse of power as anyone else.
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The basic science is settled - we don’t have to fear cow burbs or ICE cars.