Since January 2023 he has been Director General of the Institute of International and European Affairs, a think-tank based in Dublin.

[5] White was a strong opponent of Section 31 of the Broadcasting Act, which prevented Sinn Féin members from being heard.

[7] White was his party's Seanad group leader and Spokesperson on Children between 2007 and February 2011, when he was elected to the Dáil.

He subsequently was appointed as Chairman of the Joint Oireachtas Committee on Finance, Public Expenditure and Reform.

[10] White was leader of an Oireachtas delegation that met the Bundestag's Budgetary and European Affairs committees in Berlin in late January 2012.

[11] White was formally nominated for the position of Minister of State for Primary Care by Eamon Gilmore on 27 September 2012, following the resignation of Róisín Shortall.

[7] He remained Minister for Communications, Energy and Natural Resources during prolonged talks on government formation.

In January 2019, White was selected as the Labour Party candidate for the Dublin constituency in the 2019 European Parliament election.