'Between April 1998 and May 2002, between $51,000 and $73,000 in checks and cashier checks were provided by the Saudi Ambassador to the United States and his wife to two families in southern California who in turn bankrolled at least two of the 9-11 hijackers. The story was investigated by the 9-11 Commission but never fully resolved, and remains, to this day, one of the key unanswered questions concerning the backing for the worst terrorist attack to ever occur on U.S. soil.'
