Despite how lucrative book deals can be, especially at the presidential level, John McCain's wife Cindy has canceled her planned memoir. [Halperin] Official excuse from the campaign: The time requirement was “simply too great” and she wants to “spend her time campaigning for her husband.” Worth noting: Michelle Obama also killed any book deal plans, at least for now, even though publishers were throwing the sort zeros at her that Hillary Clinton is carrying around in debt.