He says "it's just too big a moment in all our lives. Even if you're not American, everyone became an American that day."
The Irish-born rocker made the comments on the red carpet for the U2 documentary "From the Sky Down," which opened the Toronto International Film Festival on Thursday night. The film chronicles the band's recording of their seminal 1991 album, "Achtung Baby."
Bono will be in New York on Sunday with his wife, Ali Hewson, for a fashion event promoting a men's collection for their EDUN line. The couple launched the not-for-profit fashion company in 2005 to raise awareness for business opportunities in Africa.