Kerry, a Massachusetts Democrat, launched the bill by saying: “We can finally tell the world that America is ready to take back our role as the world’s clean energy leader."

Connecticut independent Lieberman claims the bill has a good chance of winning the 60 votes needed for passage in the 100-seat Senate.

For much more on the bill, click here

American firm NRG Energy is a member of environmental pressure group US Climate Action Partnership (USCAP).

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