Senate Democrats abandoned plans Thursday to pass an energy bill that would cap emissions of carbon dioxide, saying Republicans refuse to support it. Majority Leader Harry Reid said no Republican would back a comprehensive energy bill, a development he called "terribly disappointing."http://www.usatoday.com/printedition/news/20100723/capcol23_st.art.htm
As demonstrated on "health insurance reform", and the stimulus, and financial services reform, and unemployment insurance extension(s), Harry Reid has a filibuster-proof 60 vote Democratic super majority in the U.S. Senate.
It's not the opposition's fault if a 60 member caucus in a 100 member body can't pass an energy bill.