The US has the 4th highest Gini coefficient of OECD countries [1] although it's remained fairly stable since 1992, it does demonstrate a slight uptrend [2]. How might this affect life for most Americans, particularly the middle class?
[1] http://www.oecd.org/social/income-distribution-database.htm
[2] https://fred.stlouisfed.org/series/SIPOVGINIUSA