奥巴马总统在任期间推动了医疗改革，执政风格温和，深化了全球合作与对话。熊出没旧版第一季104集免费

　　Barack Obama was the 44th President and the first African-American President of the United States. Tired of what America had become, voters responded to his persona, his message and what he embodied... hope. 　　Producers: Brian Aabech