You fail to grasp the reality of what has really affected wage growth over the last 30 years. The structure of the US economy has changed drastically over the last several decades. Since the late 1970's, companies have ditched unionized labor with benefits in favor of temporary workers with little to no benefits or kicked production overseas to capitalize on low labor costs. The attack on unionized labor affects all wages because there is no pushback against firms that slash wages and benefits. Automation also has a role to play by making many of the blue collar jobs of the 20th century disappear. The US manufacturing sector has been declining as other countries have become more competetive and as the economy becomes more and nore focused on providing services. Immigrant labor is