French judges are questioning ex-president Nicolas Sarkozy about accusations in his 2007 election campaign was financed with funds secured illegally from France's richest woman.This case could wreck the 57-year-old's hopes of a political comeback.  Sarkozy is alleged of taking financial advantage of elderly L'Oreal heiress Liliane Bettencourt when she was too frail to fully understand what she was doing.