WASHINGTON — A trio of senators with differing political views is working behind-the-scenes to rescue troubled climate legislation.

Sen. John Kerry, D-Mass., together with Sen. Lindsey Graham, R-S.C., and Sen. Joe Lieberman, I-Conn., said Wednesday they would work in conjunction with the White House to patch together a bill that could pass the U.S. Senate.

The three senators met individually with Energy Secretary Steven Chu, Interior Secretary Ken Salazar and Carol Browner, the president's assistant for energy and climate change.

"Our effort is to try to reach out to broaden the base of support," Kerry said at an afternoon news conference. "The key here is to really negotiate once, in a sense."

Graham, who has come under fire in his home state for his support of action on climate change, said working on legislation was a "once in a lifetime opportunity" to solve two problems: heat-trapping carbon dioxide pollution and the country's dependence on foreign sources of fuel.

"If environmental policy is not good business policy, you will not get 60 votes," Graham warned. "The green economy is coming. We can either follow or lead."

The announcement came as a key Senate panel for a second straight day delayed voting on any changes to a climate and energy bill introduced in late September by Kerry and Sen. Barbara Boxer, D-Calif., because no Republicans showed up.

Republican lawmakers are demanding a more thorough economic analysis of the measure, which would reduce heat-trapping gases by 83 percent by 2050, saying it will raise energy prices and cause job losses.

But the bill, which would set up a market for pollution permits, has also raised concerns among moderate Democrats, including Sen. Max Baucus, D-Mont.

Kerry, Graham and Lieberman stressed Wednesday that their "dual track" for climate legislation would not usurp Boxer's efforts, or the work of five other committees that have jurisdiction over energy and climate policy. The Senate energy panel has already cleared a bill that would require more electricity to come from renewable sources, and would extend offshore oil drilling into parts of the eastern gulf of Mexico that are now off limits.

"We are all working on a strategy to get a 60-vote bill written," said Boxer, who said that from the beginning she had asked Kerry and other senators to drum up support outside her committee.