Indeed, Mark. The Green lobby often bemoans the fact that America has 5% of the world’s population but 25% of its emissions, which is because, as you point out, it provides about a quarter of the world’s wealth. The UN financing system actually recognizes this, with America supplying about 25% of the organization’s budget. Now can one imagine the reaction if anyone were to suggest America pay only 5% of the UN’s slush fund. “The leading economy in the world,” Peter Ainsworth might complain, ”hasn’t been playing its full part.”