Ghanaians cheer and wave as a convoy carrying U.S. President Barack Obama passes by during his first visit to sub-Saharan Africa in Accra

Ghanaians cheer and wave as a convoy carrying U.S. President Barack Obama passes by during his first visit to sub-Saharan Africa, in Ghana’s capital Accra, July 11, 2009. U.S. President Barack Obama assured Africa on Saturday that it would not be sidelined from world affairs and hailed democratic Ghana as a model for other African countries. REUTERS/Finbarr O’Reilly (GHANA POLITICS)