After nearly a year of treating Sen. Lindsey Graham as perhaps their closest ally on the Republican side of the aisle, environmental groups are ready to turn their fire on the South Carolina lawmaker.

A three-page memo (pdf) acquired by E&E Daily that has been circulating around the environmental community indicates that advocacy groups are poised to launch an aggressive campaign against their one-time ally that will paint him as a "flip-flopper" on climate and energy policy.

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Already one group -- the American Values Network, a faith-based organization -- has gone on the air with an ad campaign in the D.C. market that states that Graham has "flipped" on climate legislation, including on the question of whether climate change is the result of human activity (Greenwire, June 16).

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