"The complaint calls for three percent emission reductions per year over the next decade from the affected facilities. This would produce less than a three percent reduction in total U.S. emissions of greenhouse gases and would not mitigate future predictions of warming in the least."

How much of a reduction would be required to mitigate warming?

Acting alone, the U.S. could reduce its emissions to zero and future climate would scarcely be affected. Assuming other industrialized nations follow suit, emission reductions would still have to be at least 10-20 times greater than called for in the suit. Still to have any effect, emissions could not incerase substantially in developing nations.