As stated yesterday, exiting the Paris Climate Accord is precisely what the global populist revolt called for: A giant middle finger to the disgustingly arrogant, elitist Obama/Merkel-led global liberal order that disdains free market capitalism and American exceptionalism.
In the US, free trade and illegal immigration pale in economic relevance to the Paris Climate Accord, which represented an enormous wet, soppy, regulatory blanket over the American economy.
This is, objectively, the best move President Trump had made to date; and based on the decisiveness and forcefulness of his speech, you can see that he is starting to really buckle down.