america s greatest 21st century challenge. it changes the world in which we live, with new competitors all across the globe. and within the changing demographics of america. and so we had substantial progress in the middle of the 20th century when it came to closing the class divide. we ve departed from that. what i m concerned with is we in many, many polite circles do not think that that class divide is a challenge to americans economic competitiveness. my mother was born in detroit, when a middle class job in possible that you could sustain a family on. that s the whole point is, if we want congress to act on anything, it is on a strategy to keep and create middle class jobs in america. you re right. but we are seeing the rich get richer and the poor get poorer, and the group is getting larger in the poor.