"The U.S. Supreme Court on Monday declined to hear a challenge to California's landmark low-carbon fuel standard, in a blow to out-of-state ethanol and gasoline producers that say the rule unfairly discriminates against their products.

A coalition of fuel makers, led by the Rocky Mountain Farmers Union, a grower of corn and soybeans for ethanol in western states, brought a lawsuit to overturn a 2009 rule mandating cuts in carbon emissions.

The California regulation calculates emissions throughout the life cycle of a fuel by including pollution from production as well as ultimate use."

Mica Rosenberg reports for Reuters July 1, 2014. [2]