You've read my primary criticism of cap and trade here. (Actually, calling it "mine" isn't quite right. I lifted it from stuff I'd read and found persuasive.) It goes like this: Unless the world's other big economic powers implement similar cap-and-trade regimes, anything the U.S. does will produce almost no benefits in terms of global warming, but will have significant costs.
I've been surprised to find very little challenge to this premise on the left. That surprises me because in today's politics, advocates don't often let the truth stand in the way of their position. But from what I've read, it seems to me that the left is conceding the truth of the argument above.
So, why go ahead with cap and trade? Various lefties are making this case: Only by adopting a regime of our own will we have the authority to say to China, India, Russia, Brazil, Japan, Chad, Madagascar, and the tiny little Duchy of Grand Fenwick, "Hey, you all need to step up to the plate and do this, too."
And you know what? It's definitely true that with no regime of our own in place, other countries can say, "If it's such a great idea, why don't you go first?"
The question is, though, whether going first will actually get us anything. Conservatives say no. They say that by going first, we'll be giving up any negotiating leverage we might have had. Without cap and trade, we'd have cap and trade to offer: "Hey, China, if you do cap and trade, we will too." But with cap and trade already in place, we've lost that leverage.
These competing arguments represent two very different ways of looking at the world, and two very different assessments of how people, and entire nations, make decisions.
Who's right? I don't know. I do know, however, that if we go first and fail to get the rest of the world to go along, we're in a pickle. If we don't go first, though, and we then try, and fail, to get the rest of the world to hold hands with us and jump off the bridge together, we can always adopt cap and trade on our own, and return to the negotiating table with the authority that the left says we need. This seems like a much more sensible approach to me.
Footnote: For what it's worth, I think most political scientists--bolstered by game theory and their assumptions about the self-interested behavior of political actors--would side with the conservatives here. They'd look at the U.S. going first and predict that the rest of the world would respond in unison: "Suckers!" But according to their rational actor assumptions and their game theoretic models, nobody should vote on election day, either. So, you can't take them (I mean, us) too seriously.
Anklenote: Lehigh, you know rat choice and game theory much better than I, so please correct me if I'm wrong. Just be sure to address me as "Doctor" when you do...