As multiple politicians, celebrities and reporters believe that a reduction of U.S. CO2 emissions would have some "large" impact on global temperatures, and would only be a trivial cost to Americans, we decided to do some simple calculations to reveal what those impacts would be. Using known CO2 science and emission levels, the simple calculations show that a zero U.S. CO2 emissions would barely put a dent in global temperatures, yet it would be stupendously expensive for all Americans to create that tiny dent. And, even if we sacrificed our 'treasure' and lifestyle for a grand, global, politically correct image, CO2 emissions growth from China and India will reverse that tiny dent in a mere 6+ years.