The discussion on 4-9 is worth looking at. Among policymakers on both sides of the aisle, there is this reflexive recitation that trade increases economic efficiency. While that's true, that assumes the purpose of national policy is to increase economic efficiency. To the contrary, the mandate of politicians in a Democracy is to improve the welfare of the majority of voters. Likewise, the discussion on 13-15 is impor…
Trump says anything and everything, and his words effectively have no meaning at this point. To name one example out of thousands, Trump also campaigned on making more people insured, which is clearly not something he has any interest in actually doing.
Rather than looking at Trump for an example of the rightmost side of the "Overton window" (much as I dislike that term) on environment, I would look at politicians like Ted Cruz. Cruz has effectively never said anything about cleaning up the air or water. I think that doing absolutely nothing about the environment is much more popular of a position than you imply. Anti-environmentalism is even a religious concern for many Americans.