The latest version of a bill that would mandate a carbon emissions cap-and- trade system for utilities and others using high-carbon coal is due to come before the full U.S. Senate on Monday. It could be voted on before the end of the week.

To judge from the intensity of lobbying, you'd think it was a proposal to make it easier to exit Iraq, corral oil prices, revive the economy, spur renewable energy investments and end unemployment.

You'd be wrong on all counts.

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