Obama Visits Nairobi Slum: Pledges Help

Sen. Barack Obama visited one of the world's worst slums Sunday, where he told residents he wants everyone in America to know about their plight and promised to push the U.S. and Kenyan government to help.

About a third of Nairobi's total population, at least 700,000 people, are crammed into a single square mile in the slum of Kibera, with little access to running water and other basic services.