https://www.finance.gov.ie/updates/minister-donohoe-publishes-irelands-corporation-tax-roadmap/

The EU says member states need to keep an eye on the number of citizenships they hand out in exchange for investment. Justice Commissioner Vera Jourova has warned that citizenships for sale represent a security threat.
https://www.dw.com/en/eu-confronts-member-states-issuing-citizenship-for-money/a-44978389

http://www.oecd.org/tax/transparency/global-forum-on-transparency-and-exchange-of-information-for-tax-purposes-united-states-2018-second-round-9789264302853-en.htm