Now, I know that the idea of a carbon tax isn’t exactly popular with everyone around here, but I’m also pretty sure that everyone agrees that it makes more sense as policy than cap-and-trade. On the other side of the ideological fence, TNR’s Bradford Plumer agrees, and, noting Ron Bailey’s interest in the idea at Reason, wonders if “maybe we’ll see some bizarre alliance between greens, right-wing economists, and libertarians on the issue.” I don’t know if we’ll ever really see an “alliance” in any true sense, but I think that it’s at least somewhat plausible that we’ll see enough rough consensus on the issue to nudge U.S. policy-makers intent on enacting some sort of global warming policy away from cap-and-trade and toward a straight carbon tax.