"What government should not do is pile on more taxation, regulation and litigation that kill jobs and hurt the middle class."

VOA: special.2010.01.30

This is a sign of my economic status: I don't have to work. It is middle and lower-class women who do not get to observe purdah in this way.

但这恰好是我经济地位的标志：,我不需要工作，只有中下阶层的女人,才像这样不遵守深闺的习俗。

普林斯顿公开课 - 人性课程节选

But the president says he will not let health reform be paid for in his words -- "on the backs of middle-class families."

VOA: special.2009.07.25

The living standards of the poor in America today are equivalent to the living standards of the middle class 40 years ago, if not the middle class in Europe today.

FORBES: Why Prosperity Is Hip, And Raises Living Standards

The living standards of the poor in America today are equivalent to the living standards of the middle class 35 years ago, if not the middle class in Europe today.

FORBES: Economic Growth, Not Redistribution, Most Benefits The Poor, Working People, And The Middle Class

And I will not allow middle class families to be treated like pawns on a chessboard.

WHITEHOUSE: Weekly Address: Protecting the Middle Class & the Economy