Democrats and Republicans were warring over reports that the White House has "lost" -- or simply failed to keep -- archives of e-mails belonging to the president and his advisers. Since last spring, the U.S. House of Representatives Committee on Oversight and Government Reform has been investigating reports that an estimated 5 million messages from 473 days between 2003 and 2005 allegedly vanished from e-mail servers housed within the president's office.