The seven-year U.S. economic boom has produced great rewards, but they have not been distributed equitably. In a report issued last week, the Census Bureau found that the gap between rich and poor is widening. On the basis of a survey of 58,000 households, the bureau estimated that the poorest one-fifth of U.S. families received 4.6% of total income -- the lowest percentage since 1954. By contrast, the wealthiest one-fifth of families accounted for 44% of the income -- the highest share ever recorded.
The number of American families living below the poverty line, currently an annual income of $12,091 for...