The controversy surrounding the appointment led to a confidence motion in Foreign Affairs Minister
Former Minister Katherine Zappone's declined an invitation to attend the Joint Oireachtas Committee on Foreign Affairs and Defence.
Two Kildare TDs, Fianna Fáil's James Lawless and Independent, Cathal Berry, sit on the committee.
Dr. Zappone had been asked to appear before the committee to give her account of the failed attempt to appoint her as a UN special envoy.
The chairperson of the committee, Charlie Flanagan confirmed this evening she has turned down the opportunity.
The controversy surrounding the appointment led to a confidence motion in Foreign Affairs Minister being debated in the Dail.