In his final speech to the African Union this week, President Obama addressed corruption on the continent. And then he mentioned, in what seemed an offhand fashion, the one thing that he had to know would rankle his critics back…

What’s the significance of President Obama’s historic trip to Africa? Judy Woodruff discusses the visit and the president’s record on Africa with Johnnie Carson of the United States Institute of Peace and William Gumede of the University of the Witwatersrand.