As described in the New York Times, Henry Waxman and Ed Markey revealed their climate and energy bill draft. The bear of a bill sets relatively aggressive targets for cutting emissions. It requires a 20% cut from 2005 levels by 2020.
Some are already calling these early targets too aggressive. Rick Boucher [D-VA], a democrat (or if not him, someone - no question) will try to ease up on the urgency imposed by the bill.
As the debate unfolds, this will be an extremely hot topic!