5. Tom Donahue
President, U.S. Chamber of Commerce
Donahue likes to call his organization "the voice of business." But under his leadership, the Chamber has become the voice of big polluters like ExxonMobil and the American Petroleum Institute. "The main purpose of the Chamber," says climate expert Joe Romm, "is to launder money from large industries and multinational corporations to affect public policy." Last year, the Chamber spent $81 million on lobbying, far more than any other group. During the midterm election, it also pledged $75 million for ads to help elect Republicans, nearly all of whom are ardent climate deniers. After helping to derail climate legislation and calling for a new "Scopes monkey trial" on the science of global warming, Donahue is now taking aim at the EPA, pushing industry-friendly studies to argue that tougher regulation of climate pollution will destroy millions of jobs and shrink the economy by $1 trillion.