FROM CNN's Jack Cafferty: A sobering picture of what's ahead for this nation's children… more than 20 percent of them – one in five – are living below the poverty line. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/06/09/art.kid.jpg caption=""] A new study shows the economic well-being of families has plummeted to levels not seen since the 1970s… thanks to the … Continue reading 1 in 5 U.S. children living below poverty line