WASHINGTON (Reuters) - On a bitterly cold Inauguration Day in January 2009, Barack Obama rode in a tank-like limousine to the U.S. Capitol, giving Americans on television and in Washington their first glimpse of an African-American assuming the trappings of the presidency. Four years and another election later, the ride to the Capitol was less historic, but still a poignant reminder of Obama's place in history. The Democratic president won re-election on November 6, beating Republican Mitt Romney despite a difficult economic recovery. ...