(Reuters) - As the 44th president of the United States, Barack Obama, 51, signed into law a revamp of the national healthcare system and authorized the raid that killed Osama bin Laden but struggled to revive the economy and create jobs. As the United States holds its presidential election on Tuesday, here are key facts about Obama, the nation's first black president. - Barack Obama has a personal background like no other president in U.S. history. His mother, Ann Dunham, was a white woman from Kansas and his father, Barack Obama Sr. ...
