Not a good cite. The rest of us don't remember the Great Depression as a time of labor peace.
At the peak of the Great Wave of immigration in 1910, the number of immigrants living in the U.S. was less than half of what it is today, though the percentage of the population was slightly higher. The annual arrival of 1.5 million legal and illegal immigrants, coupled with 750,000 annual births to immigrant women, is the determinate factor— or three-fourths— of all U.S. population growth.
During the 1990s, an average of more than 1.3 million immigrants — legal and illegal — settled in the United States each year. Between January 2000 and March 2002, 3.3 million additional immigrants have arrived. In less than 50 years, the U.S. Census Bureau projects that immigration will cause the population of the United States to increase from its present 300 million to more than 400 million.