A day after Sens. John McCain (R-Ariz.) and Joe Lieberman (D-Conn.) failed in their attempt to add climate change regulations to the energy bill, two analysts look at what went wrong. Why did the cap-and-trade plan receive less votes than in 2003? Did nuclear incentives doom the amendment? Will the White House ever support a mandatory climate bill? David Doniger, climate center policy director with the Natural Resources Defense Council and Troy Bredenkamp, director of congressional relations at the American Farm Bureau Federation, discuss what's next for global warming policy.