http://uk.reuters.com/article/us-britain-eu-negotiations-idUKKBN17R1XJ
https://www.wilsoncenter.org/sites/default/files/media/uploads/documents/RAFDI_Working_Group_Report_0.pdf
https://www.brookings.edu/blog/brookings-now/2017/08/24/do-immigrants-steal-jobs-from-american-workers/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=55726788
https://undocs.org/en/A/CONF.231/3