9/11 Commissioner Bob Kerrey will mention in a public hearing, “In March 2001, another CSG [Counterterrorism Security Group] item on the agenda mentions the possibility of alleged bin Laden interests in ‘targeting US passenger planes at the Chicago airport,’ end of quote.”
[9/11 Commission, 3/24/2004] No newspaper has ever mentioned this warning, which presumably remained classified aside from this one accidental mention by Kerrey.