What Can Presidents Do about High Gas Prices?

Despite improvements in employment and the economy, President Obama's poll ratings are slipping again. Is it the increasing cost of gasoline? Gas prices can make a big difference in presidential campaigns. Just ask Jimmy Carter. As prices soar toward $4 a gallon, Newt Gingrich claims he can bring them down to $2.50. How much power does the President have over the price at the pump? Steven Mufson reports on energy for the Washington Post.