President Barack Obama gestures during a news conference with Senegalese President Macky Sall (not shown), Thursday, June 27, 2013, at the Presidential Palace in Dakar, Senegal. Obama is visiting Senegal, South Africa, and Tanzania on a week long trip. (AP Photo/Evan Vucci)

Photo by: Evan Vucci

President Barack Obama gestures during a news conference with Senegalese President Macky Sall (not shown), Thursday, June 27, 2013, at the Presidential Palace in Dakar, Senegal. Obama is visiting Senegal, South Africa, and Tanzania on a week long trip. (AP Photo/Evan Vucci)