Estado Libre Irlandés
He stood as a pro-Treaty Sinn Féin candidate at the 1922 general election for the Wexford constituency but was not elected. In 1922, he was appointed by the Provisional Government of the Irish Free State to the Irish Free State Constitution Commission to draft the Constitution of the Irish Free State, commonly known as the Irish Free State Constitution Commission. It prepared a draft Constitution. He was thus one of the constitutional architects of the Irish Free State.