"He and Democratic Senator Joe Lieberman wrote the legislation that created the 9/11 Commission, while he and Democratic Senator Fritz Hollings co-sponsored the Aviation and Transportation Security Act that federalized airport security under what became the Transportation Security Administration.On October 18, 2001, McCain stated on the "Late Show with David Letterman" that "There is some indication, and I don't have the conclusions, but some of this anthrax may – and I emphasize may – have come from Iraq," more than a week before ABC's series of reports identifying the composition of the anthrax samples as uniquely Iraqi, a determination then and now generally considered to be erroneous.