Whether labeled global warming or climate change, the theo- ry that manmade greenhouse gas (GHG) emissions will cause cat- astrophic warming is the justification for onerous climate policies that aim to limit or eliminate the use of fossil fuels: coal, natural gas, and oil. These policies have historically been institutionalized in Environmental Protection Agency (EPA) regulations and in other actions across the federal government. The U.S. Congress, however, has repeatedly refused to delegate authority to federal agencies to control greenhouse gases—among which carbon diox- ide (CO2) is by far the dominant source.