Lobbying group, aggressive litigator, political power broker, and media campaigner: the US Chamber of Commerce is all that and more. Yet its tremendous influence does not get the attention it merits, promoting corporate interests on behalf of anonymous donor companies. Journalist Alyssa Katz reflects on the immense power of the U.S. Chamber of Commerce — how it came to be what it is today, who it represents, and the human costs of its influence. (Encore presentation.)