Number of Americans living in poverty 'increases by 4m'

One in seven Americans was living in poverty in 2009 with the level of working-age poor the highest since the 1960s, the US Census Bureau says.
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The bureau defines poverty as any family of four living on less than $21,954 a year.
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The official US poverty rate in 2009 rose to 14.3% from 13.2% in 2008. In 2009, 43.6 million Americans lived in poverty, up from 39.8 million the year before, the third consecutive increase, the bureau said.