The Federal Reserve Chair Janet Yellen said at the Conference on Economic Opportunity today and Inequality in Boston that she was concerned about the growing wealth and income inequality gap in the U.S. She asked if "this trend is compatible with values rooted in our nation's history, among them the high value Americans have traditionally placed on equality of opportunity".

The Fed Chair pointed out that the intergenerational mobility "is lower in the United States than in most other advanced countries."

Yellen didn't address the economic outlook or monetary policy in her remarks.