I'm not really an expert in Economics. I tried to read through it but couldn't quite understand the main take away. What exactly is the relevant take away wrt this discussion?
The best empirical research that tries to examine what has actually happened in the U.S. labor market aligns well with economy theory: An increase in the number of workers leads to lower wages. This report focuses on the labor market impact of immigration.
I get what the report focuses on. The report has to be contextualized with two important phrases used in the parent comment "uncontrolled immigration" AND "artificial suppression" of wages.