The Justice Department could sue Apple Inc as early as Wednesday over alleged electronic book price-fixing, while settling with several publishers as early as this week, two people familiar with the matter said. The Justice Department is investigating alleged price-fixing by Apple and five major publishers: CBS Corp's Simon & Schuster Inc; HarperCollins Publishers Inc; Lagardere SCA's Hachette Book Group; Pearson and Macmillan, a unit of Verlagsgruppe Georg von Holtzbrinck GmbH. A lawsuit...