It's been 50 years since President Lyndon B. Johnson announced his "War on Poverty." It was a time when the nation redefined its values, extending to millions of people the chance at last to be a part of the American Dream. A half century later, we have made enormous progress. But we still must do more to extend opportunity to those who live on society's margins. With patience, persistence and partnership, we can create economic opportunity for every person willing to work hard for it.