In his weekly radio and Internet address, Obama is asking people to remember the victims and their families, and to honor the first-responders who risked their lives to help.
Obama says America has come back stronger and al-Qaida is on the path to defeat.
In the Republican address, Sen. John Barrasso (buh-RAS'-oh) of Wyoming criticized Obama's presidency and said the nation isn't better off than it was four years ago under President George W. Bush.
Obama address: www.whitehouse.gov
GOP address: www.youtube.com/gopweeklyaddress