Obama's Push for Investment in Africa Spurned by U.S. Companies

Obama's Push for Investment in Africa Spurned by U.S. Companies

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Security stands guard near a wall covered in posters welcoming U.S. President Barack Obama to Senegal in Dakar on June 27, 2013. Obama, who began a three-nation African trip on June 26, aims to invigorate the U.S. effort with a July 1 roundtable in Tanzania with business leaders and a speech to U.S. and African chief executives.