Kate Sheppard at Mother Jones:

What is important is both the public appearance by Graham and the emergence of Lieberman as the third wingman. In his remarks, Graham seemed to distance himself from the Republicans on the Environment and Public Works Committee that are boycotting the markup of the Kerry-Boxer bill.”If you can’t participate in solving the problem, then why are you up here?” said Graham.

But later in the day he sided with EPW’s Republican rebels. In a letter to EPA administrator Lisa Jackson, Graham joined with Judd Gregg of New Hampshire and Olympia Snowe and Susan Collins of Maine—all seen as potential “yes” votes—to endorse the call for further EPA analysis. “As Senators interested in a bipartisan approach to addressing climate change and energy independence this Congress, we have a keen interest in ensuring that cost estimates, models, and other data critical to the legislative process be made available to members of Congress and the public in a timely manner,” they wrote. “We cannot support legislation without this information.”

Here is the letter, which was from Senators Graham, Collins, Snowe and Gregg: