President Barack Obama served as the 44th President of the United States from 2009 to 2017. He was the first African American to hold this office and was a member of the Democratic Party. Before his presidency, he was a U.S. Senator from Illinois and a community organizer. During his time in office, President Obama focused on several key issues, including healthcare reform, economic recovery following the 2008 financial crisis, and climate change. His signature legislation, the Affordable Care Act, aimed to expand healthcare coverage for millions of Americans. He also received the Nobel Peace Prize in 2009 for his efforts to strengthen international diplomacy.