This is now the subject of intense debate in quite a number of countries. And where such entities have been created, they mostly exist outside the central bank.
Alan Greenspan: The economic outlook Testimony of Mr Alan Greenspan, Chairman of the Board of Governors of the US Federal Reserve System, before the Joint Economic Committee, US Congress, Washington DC, 9 June 2005. *  *  *  Chairman Saxton, Vice Chairman Bennett, and members of the Committee, I am pleased to appear once again before the Joint Economic Committee.