3 Reasons against Obama’s Whole Green Agenda:
1. The U.S. has huge reserve on all kinds of fossil fuels and natural resources not yet to be exploited -> we don’t need clean energy this desperate.
2. Public budget is terrible and overall economy performance is far below ideal -> a more realistic approach is to control government spending, lower corporate taxes to stimulate growth and thus creating more jobs.
3. Clean energy technology is very immature -> take electric vehicle as an example. Yes, pure electric saves gas and eliminates emission, but the source used to generate more electricity creates more pollution (coal)
Besides these 3 reasons I gave you, you’ll have to research more to make the argument stronger. Good luck!