Barack Obama, 44th president of the United States.
Barack Hussein Obama, 44th president of the United States. God bless the United States of America.
Barack Obama took the oath of office today as the 44th president of the United States and pledged to "begin again the work of remaking America."
Addressing a huge throng estimated at more than 2 million people on the capital's Mall and millions of others watching on television, Obama recognized the multiple crises now afflicting the nation at a time of war abroad and economic turmoil at home. But he sought to rally Americans to a "new era of responsibility" and the promise of a brighter future.