Fred Upton.3.  Fred Upton

U.S. rep from Michigan

Before: “Climate change is a serious problem that necessitates serious solutions,” he said in April 2009. And his website declared, “I strongly believe that everything must be on the table as we seek to reduce carbon emissions.”

After: But in December 2010, while angling to become chair of the House Energy and Commerce Committee, he wrote, “On Jan. 2, the Environmental Protection Agency will officially begin regulating the emission of carbon dioxide and other greenhouse gases. This move represents an unconstitutional power grab that will kill millions of jobs … This presumes that carbon is a problem in need of regulation. We are not convinced.” And a few days later, he said, “I don’t think that we have to regulate carbon to the degree we have a carbon tax or you have a cap-and-trade system.”