Barack Hussein Obama II (/bəˈrɑːk huːˈseɪn oʊˈbɑːmə/  ( listen); born August 4, 1961) is the 44th and current President of the United States. He is the first African American to hold the office, as well as the first president born in Hawaii. Obama previously served as the junior United States Senator from Illinois from January 2005 until he resigned after his election to the presidency in November 2008.

Obama is a graduate of Columbia University and Harvard Law School, where he was the president of the Harvard Law Review. He was a community organizer in Chicago before earning his law degree. He worked as a civil rights attorney in Chicago and taught constitutional law at the University of Chicago Law School from 1992 to 2004.

Obama served three terms in the Illinois Senate from 1997 to 2004. Following an unsuccessful bid for a seat in the U.S. House of Representatives in 2000, Obama ran for United States Senate in 2004. During the campaign, several events brought him to national attention, such as his victory in the March 2004 Democratic primary election for the United States Senator from Illinois as well as his prime-time televised keynote address at the Democratic National Convention in July 2004. He won election to the U.S. Senate in November 2004.