All sides of this complex issue are paid. Econdatus.com didn't do all that gratis. Who are they and in whose pay are they?
Actually, Econdataus.com did do all of that gratis. I know because I am the sole owner and poster to the site. That's not to say that I don't have my motivations. I'm a math major and software developer and have seen a number of co-workers lose their jobs because of our H-1B policies. I'm still working in the industry but the working conditions are getting to be more and more like that of a sweatshop. I enjoyed learning the language R that I used for the analysis and I hope that I might be able to work it into a better job. Finally, as a math major, it just bothers me to see statistics so misused. I do very much think that our H-1B system is being abused and needs to be reformed. But I also think that our entire system of academic research could use reform. As I describe at this link, I think that all studies that are used to set public policy should be required to release their data and calculations so that they can be replicated. Otherwise, they should be ignored or treated as "thought experiments". On that topic, I have posted all of the R programs with which I did my analysise at http://econdataus.com/amerjobs.htm.