President Barack Obama's trip to Africa has largely been ignored by the U.S. media, and for good reason: it seems to have no real purpose. While attention to Africa is long overdue, the president is announcing no new strategy, concluding no significant agreements--merely announcing a new investment in African power generation, which African companies are arguably capable of funding and carrying out themselves. Much of his trip to Senegal, South Africa and Tanzania consists of sightseeing with his family--and an entourage of 1,000, at a cost to taxpayers of $60 to $100 million. Consider the reason Obama gave reporters about...