What does a middle class nation do without a middle class? An abundance of evidence suggests that we here in the United States are about to find out.

America's Shrinking Middle Class documents trends that have been building not just since the Great Recession, but for over four decades. In 1970, the share of U.S. income that went to the middle class was 62 percent. By 2010 that figure had fallen to 45 percent. In that same year, the median income for middle class Americans had gone from $72,956 to $69,487 a decline of nearly 5 percent in just one year.

A shrinking middle class...

What does a middle class nation do without a middle class? An abundance of evidence suggests that we here in the United States are about to find out.

America's Shrinking Middle Class documents trends that have been building not just since the Great Recession, but for over four decades. In 1970, the share of U.S. income that went to the middle class was 62 percent. By 2010 that figure had fallen to 45 percent. In that same year, the median income for middle class Americans had gone from $72,956 to $69,487 a decline of nearly 5 percent in just one year.

A shrinking middle class...