You expcet me to be impressed by that? LOL. So what? Economics is common sense.
If there is a shortage of nurses then importing nurses (again using this as a hypothetical) would not decrease wages.
Increasing supply always always always lowers prices. Get your money back your degree is worthless.
Where did you get your economics degree? In Mexico? Nursing requires at least 2 to 6 years of education and internships.
The supply and demand wage calculation only works if you can get people off the street to jump right into the job. The reason I bring up nursing is because while a shortage of nurses will raise salaries for nurses it is not a good thing to have a shortage of nurses so that is a case where bringing in nurses to offset the shortage is good until you can train a local population of nurses.