Willard Mitt Romney these days could not be more explicit about abandoning President Barack Obama's carbon-dioxide restrictions. "Irresponsibly," Romney wrote in an Aug. 28 op-ed for Foster's Daily Democrat in New Hampshire, the Environmental Protection Agency "declared carbon dioxide, the same carbon dioxide that humans exhale, to be a 'pollutant' that poses risks to human health." He also observed: "Congress had the good sense not to compound our economic challenges by imposing cap-and-trade's extraordinary costs on the American people." Romney's website offers this carbon-friendly promise: "Mitt Romney will eliminate the regulations promulgated in pursuit of the Obama administration's costly and...