Since becoming America's 44th president, he has ordered the closure of Guantanamo Bay, announced multi-billion-dollar plans to revive the US economy and credit markets, and welcomed a new family pet.
See what else Barack Obama has been doing in his first 100 days. For further coverage, see our
Photographs: AP, AFP and Getty Images.
Slideshow by Paul Kerley. Publication date 29 April 2009.