Associated Press: Exxon Mobil reported the fattest operating profit in U.S. corporate history Thursday but took a beating anyway – from politicians railing against Big Oil, drivers bleeding cash at the pump and investors who expected more. The world’s largest publicly traded oil company turned a profit of $11.7 billion for the second quarter, lifted mostly by meteoric crude prices. Its earnings were up 14 percent from a year ago. Total sales: $138 billion – roughly the gross domestic product of …