James G. Douglas, chair of the constitution drafting committee, proposed extern ministers on the model of the Swiss Federal Council.
[2] The idea of extern ministers was first mooted as a way of placating republicans opposed to the 1921 Anglo-Irish Treaty on which the Free State was founded.
It would have allowed republicans to hold ministries in a national unity government without their having to take the Oath of Allegiance which the Treaty required of members the Oireachtas (parliament).
[3] However, British government objections meant the proposal was altered, and extern ministers were required to take the Oath and, though nominated by the Dáil, were appointed by the Governor General.
Although extern ministers were appointed from 1922 until 1927, in reality they formed a single Cumann na nGaedheal government with the Executive Council, rather than being independent of it.
The amendment was enacted just before the June 1927 general election, and the subsequent Executive Council included the portfolios previously assigned to extern ministers.