Climate Change: A suppressed EPA study says old U.N. data ignore the decline in global temperatures and other inconvenient truths. Was the report kept under wraps to influence the vote on the cap-and-trade bill? This was supposed to be the most transparent administration ever. Yet as the House of Representatives prepared to vote on the Waxman-Markey bill, the largest tax increase in U.S. history on 100% of Americans, an attempt was made to suppress a study shredding supporters' arguments.