Although the IUA hoped to play a part in the Parliament of Southern Ireland envisaged under the 1920 Home Rule Act, the parliament never functioned. The "Irish Times", said to be the "voice of Southern Unionists", realised that the 1920 Act would not work and argued from late 1920 for "Dominion Home Rule", the compromise that was eventually agreed upon in the 1921–22 Anglo-Irish Treaty. Under the Treaty, Northern Ireland became a part of the Irish Free State from its creation on 6 December 1922; the Northern Irish parliament voted to leave the Free State two days later.