Proof?
I first read it in Levin’s new book and have since seen it in other places.
The links are to two of the sources that Levin cites in “Plunder and Deceit”.
It is a good book with lots of footnotes. He cites many other sources for this in the book.
Look at it if you want more proof.
Census Bureau Reports Majority of STEM College Graduates Do Not Work in STEM Occupations
http://www.census.gov/newsroom/press-releases/2014/cb14-130.html
http://www.epi.org/publication/bp359-guestworkers-high-skill-labor-market-analysis/
“For every two students that U.S. colleges graduate with STEM degrees, only
one is hired into a STEM job.”