Right hand/left hand: The EPA is simultaneously promoting an increase and decrease of ozone emissions by requiring use of ethanol, which increases ozone emissions from automobiles by 20%.
In addition to ozone, ethanol significantly increases emissions of other actual pollutants such as carbon monoxide and nitric oxide in comparison to gasoline, and utilizes more fossil fuels in its production than it saves, which also increases CO2 emissions. Fuel economy is also reduced due to use of ethanol, increasing emissions and costs to consumers. Ethanol increases emissions, fuel costs, engine damage, and food prices.
Burning the world's food as ethanol is a lose/lose proposition that benefits nobody or the planet, other than the government-Big-Ethanol-industrial-complex.
Prior posts on ethanol
The Dubious Benefits of Further Ozone Reductions