He was appointed as Attorney General in June 2017 on the nomination of TaoiseachLeo Varadkar, at the formation of the 31st Government of Ireland, succeeding Máire Whelan. At the time of his appointment, he was active with Fine Gael in Dublin Bay North. He was seen by ministers to be a trusted adviser to Varadkar. In 2018, he described the Judicial Appointments Commission Bill 2017, which had been promoted by Minister for Transport, Tourism and SportShane Ross, as "a dog’s dinner". The Bill reached the final stage of debate in Seanad Éireann and was subject to a series of amendments which delayed its progression through the Oireachtas. The bill lapsed in January 2020 on the dissolution of the 32nd Dáil when the 2020 general election was called. He recommended that the text of the Thirty-sixth Amendment of the Constitution of Ireland, to replace the Eighth Amendment, should contain text enabling the Oireachtas to legislate for abortion, rather than simply removing provisions related to abortion from the Constitution. The advice was published in abbreviated form. He advised that the Occupied Territories Bill would be open to Constitutional challenge, which led to the government deciding not to support it. Following the death a candidate in the Tipperary constituency during the 2020 Irish general election, he advised the government that the election could go ahead. Following the 2020 general election and several months where no government was in place, he appeared on behalf of the State in a three-judge division of the High Court on a case taken by a number of senators about whether the Seanad could sit without the nominated members of Seanad Éireann. Woulfe on behalf of the State argued that it could not. The three judges found in favour of the State. His department advised on legislation restricting activity during the COVID-19 pandemic in the Republic of Ireland, including in regard to its constitutional implications. Negotiations between Fianna Fáil, Fine Gael and the Green Party for a new government resulted in the role of Attorney General being rotated over the term of the government, with Fianna Fáil selecting the first Attorney General. Woulfe was succeeded by Paul Gallagher on 27 June 2020.
Judicial career
Woulfe briefly returned to practice at the bar in June 2020 following the end of his period as Attorney General. In July 2020, he was nominated by the Government to fill a vacancy on the Supreme Court of Ireland that had been left following the retirement of Mary Finlay Geoghegan. Taoiseach Micheál Martin said his appointment was recommended by the Judicial Appointments Advisory Board and had not been part of government negotiations. Woulfe informed Leo Varadkar in February 2020 that he would apply to the JAAB for a Supreme Court position. He was appointed on 23 July 2020 and made his judicial declaration the following day in the Supreme Court.
Personal life
A longtime resident of Clontarf, Dublin, Woulfe is married to Sheena Hickey, with two children.