Challenges abound for Bush at last economic summit I haven’t seen anything from bush that will straighten out the economy. What do you think of his plan? "Bush has urged a halt in the growth of carbon dioxide and other greenhouse gases by 2025, but has not offered a strategy for pollution reductions or backed mandatory emission cuts. He has supported an increase in auto fuel economy, a requirement for a huge increase in use of ethanol and other biofuels, and for developing clean energy technologies." "Both Democrat Barack Obama and Republican John McCain have argued for stronger standards for reducing greenhouse gas emissions than those advocated by Bush."