An energy-intensive industrial coalition spent tens of millions of dollars to ensure the United States’ withdrawal from the Paris climate agreement. The Competitive Enterprise Institute, the American Energy Alliance, the Heartland Institute, Americans for Prosperity and forty other free-market think tanks that signed an open letter urging Donald Trump to pull out were bankrolled by, among others, ExxonMobil and the Koch Brothers, the Kansas-based billionaires who control refineries and pipelines that process 600,000 barrels of crude oil a day.