A policy promoting economic growth would better insulate the United States and the world from the impacts of global warming than a policy to cut CO2 emissions by 70–80 percent over the next four decades would. Carbon dioxide cuts in the 70–80 percent range—as proposed in the Lieberman–Warner and Waxman–Markey cap-and-trade bills and the Boxer–Sanders carbon-tax bill.[14]—would reduce U.S. national income by tens of trillions of dollars by 2050 and hundreds of trillions of dollars by 2100. Gains to other countries would only partially offset these phenomenal losses.