WASHINGTON (AP) — Poor oversight by the Internal Revenue Service allowed workers to use agency credit cards to buy wine for an expensive luncheon, dorky swag for managers' meetings and, for one employee, romance novels and diet pills, an agency watchdog said Tuesday. Two IRS credit cards were used to buy online pornography, though the employees said the cards were stolen. One of the workers reported five agency credit cards lost or stolen. IRS employees used agency credit cards to make more than 273,000 purchases totaling nearly $108 million in 2010 and 2011, according to the report by the Treasury...