In Washington scandals, the question is usually what the White House knew.
But in the case of former CIA Director David Petraeus, lawmakers are asking why President Obama did not know about a federal investigation that had found evidence Petraeus was having an affair.
Paula Broadwell, the woman whose extramarital affair with retired Gen. David Petraeus led to his resignation Friday from the post of CIA director, is a major in the Army Reserve who specializes in counterterrorism issues. She's also the author of All In: The Education of General David Petraeus, a biography of the former top U.S. commander in Afghanistan.