
https://www.socialeurope.eu/2017/05/smooth-brexit-interests-germany-much-uk/

http://www.migrationobservatory.ox.ac.uk/resources/reports/unsettled-status-which-eu-citizens-are-at-risk-of-failing-to-secure-their-rights-after-brexit/

https://www.brookings.edu/wp-content/uploads/2020/10/Executive-order-worth-100-billion.pdf