This editorial in the WSJ points out that U.S. president Obama made economic inequality "the defining challenge of our time" in his State of the Union address in 2013, yet the U.S. has seen widening economic and social disparities in his two terms- creating the situation where Bernie Sanders is now in a virtual tie in Iowa with Hillary Clinton. It says Hillary Clinton wins handily over Sanders on three of four issues of the most concern for Democratic caucus voters in pre-entrance polls, healthcare, terrorism, and on the important issue of jobs and economy by 51% to 42%. Where she falls behind is on the issue of income inequality, and by a very wide margin reflecting voter disillusionment with policies that resulted in marginalization of some workers through globalization and long term unemloyment, and reduced access to education with high tution costs- there Sanders wins by 61% to 34%. Federal Reserve policies that kept rates low near zero hurt middle class savers, working class savers, and benefitted disproportionately upper class investors in the stock market, widening the social and economic disparities....