Obama gives a call for change to a rapt Africa

by Peter Baker

President Obama addressed the Ghanaian Parliament at the Accra International Conference Center on Saturday. Photo: Paul Loeb/Agence France-Presse/Getty Images

CAPE COAST, Ghana — President Obama traveled in his father’s often-troubled home continent on Saturday, where he symbolized a new political era but brought a message of tough love: American aid must be matched by Africa’s responsibility for its own problems.