But one thing is clear: No other modern president has reached out so widely to so many corners of the city, says Doris Kearns Goodwin, a presidential historian.

• 奥巴马是自理查德.；尼克松总统以来第一位住在城市社区中当选的总统，奥巴马住在芝加哥种族和经济多元化的海德公园。现在奥巴马家庭急于探索白宫墙外的城市。