A faith-based liberal group is spending six figures on a new ad to pressure Sen. Lindsey Graham (R-S.C.) on climate change.

Amid the push for lawmakers to pass some form of clean energy and climate legislation, the American Values Network took out an ad buy on D.C. cable it says will total in the six-figure range, targeting Graham for "flipping sides" on the issue.

"If you can't participate in solving a hard problem, why are you up there," the ad asks, noting Graham's comments during the last year on energy policy.

"He’s now using the same talking points he so effectively dismissed a few months ago in an attempt to kill momentum on this bill,” said Eric Sapp, Executive Director of the American Values Network.

Graham pulled his support in May on a bipartisan measure he was crafting with Sens. John Kerry (D-Mass.) and Joe Lieberman (I-Conn.) to rein in climate change. He said passing such legislation right now was impossible.

"With Sen. Graham now abandoning bipartisanship for precisely the type of energy bill he previously dismissed as 'half-assed,' it's hard to understand how he maintains any credibility on what is doable on energy policy in this Congress," Sapp said.
 
The ad will start airing today. View it below: