In the days following Trump’s climate treaty pullout, “more than 1,200 business leaders, mayors, governors and college presidents have signaled their personal commitment to the goal of reducing emissions.” If you measure the reaction to the move and look at public opinion polls, you might be left wondering why Trump (and more interestingly, many Senators and others politicians) supported the move. From The New Yorker’s Jame Mayer: In the withdrawal from the Paris climate agreement, the Koch Brothers’ campaign becomes overt.