President Obama has a big goal for the U.S. He wants to reduce oil imports by one third by the year 2025. If that sounds familiar, it's because every president since Richard Nixon had a similar goal. None of them achieved it. But President Obama says this time it's different. Gas prices are high. The Mideast is in turmoil. The president's plan includes conservation, greater reliance on natural gas and biofuels, and more domestic oil production.More