Consumers’ pain at the gas pump will likely be shared by President Obama at the polls in 2012 and could cost him a second term unless energy prices take a drastic turn for the better in the next 18 months. “Energy prices should be the Achilles’ heel for Obama,” said Scott Wheeler, executive director of a conservative political action committee. The average gasoline pump price across the country is $3.621 per gallon, the Energy Information Administration reported. Prices in some parts of the country are already topping $4 a gallon. And the uncertain global situation isn’t helping. “Unrest in the...