Barack Obama is most famous for being the 44th President of the United States of America. He was the first African American to hold the office, and was in office from 2009 to 2017. During his time as President, Obama oversaw the country during some of its most tumultuous times, including the Great Recession and the War in Afghanistan. He also signed into law the Affordable Care Act, which provided healthcare to millions of Americans who had previously been without insurance. Obama's time as President was marked by significant progress in many areas, and he remains a popular figure, both in the US and around the world.