The United States President Obama started in Chicago, in 1983 graduated from the Columbia University, Chicago in 1985 to work. In 1996, Obama from Chicago was elected to the Illinois senator and after 3years in2000, in the campaign for re-election; the United States House of Representatives seats after failed, Obama will mainly concentrate on the Illinois Senate work. In February 10, 2007, Obama in the city of Springfield Illinois formally announced in the2008 presidential election of the United States, on November 5, 2008, Obama defeated Republican candidate John Mccain, was elected as the forty-fourth president of the United states. To the White House in Washington after the job, his family was still in Chicago.