The measure, which calls for the most striking government intervention in energy use since 1975, is up for a vote Friday.
He dismisses Ahmadinejad's accusation that US meddled in Iranian politics and must apologize.
Sex scandal engulfing South Carolina's governor may keep Republicans from focusing on their real task: to define an alternative vision to Obama's.
A successful vote Friday could give the administration momentum on its biggest priority: healthcare reform.
Dire pronouncements aside, the process is just getting started, with legislation at a formative stage and Obama yet to offer his plan.