https://www.socialeurope.eu/overcrowded-camps-at-europes-borders
https://blogs.lse.ac.uk/brexit/2020/02/21/migration-how-scotland-hoped-to-do-things-differently/
https://www.ips-journal.eu/topics/democracy-and-society/between-human-rights-and-border-control-6860/
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/866744/CCS0120013106-001_The_UKs_Points-Based_Immigration_System_WEB_ACCESSIBLE.pdf