In 2006, Walmart made headlines when its vice president for corporate strategy and sustainability, Andrew Ruben, told a congressional committee that the company "would accept a well-designed mandatory cap-and-trade system for greenhouse gases." Other major U.S. companies had spoken favorably of cap-and-trade, but Walmart made a bigger splash. Not only was it America's second-largest corporation; it also had deep roots in the country's coal-burning heartland.
But even as Ruben was delivering his testimony, Walmart's political action committee (PAC) was funneling a river of campaign cash into the coffers of lawmakers who would ensure that the U.S. did absolutely nothing to curb its greenhouse gas emissions. During the 2007-2008 election cycle, 80 percent of Senate campaign contributions that came from Walmart's PAC and large donors employed by the company went to senators who helped block the Lieberman-Warner cap-and-trade bill, according to data on political giving published by the Center for Responsive Politics. (When the bill arrived on the floor in 2008, it came up 12 votes shy of the 60 needed to overcome a filibuster.)