If you thought the debate over cap and trade legislation (as embodied in the Waxman-Markey bill) was already overheated, ridiculous, and divisive, you ain't seen nothing yet. The real fun begins today, with amendment madness unleashed by the Republicans. That will amount to little more than a sideshow, but as the markup process plays out this week, even (cautiously) supportive green groups, such as the Sierra Club, are waiting to see which way the bill bounces. Greenpeace and Friends of the Earth, however, announced on Friday that they had seen enough (compromises) to sour on the existing House bill. This split among green groups seems to mirror the tortured reader comments of recent weeks posted on Grist and Climate Progress, a good many which expressed doubts about the merits of cap and trade (versus a carbon tax)--and that was before the full details of the Waxman-Markey bill were known. For those still undecided and open to varying interpretations of the bill's efficacy, the following two assessments frame the polar ends of the spectrum: Joe Romm's take, after getting a look at the text: