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.

Water Outage In Place For Maynooth And Straffan Tomorrow
Kfm Obituary Notices
Nationwide Fuel Protest Continues Into Third Day
"I Don't Think Anybody Is Going To Really Listen To Us Until Somebody Dies On That Road": Criticism Of Moone-Timolin Cycleway Continues
International Wholesale Prices Are "Not Price Gouging", Says CCPC
Costs Of Home Heating Oil Up By 67.5 Per Cent Between February and March
91-Year-Old Lelia Doolan To Arrive In Monasterevin Today As Part Of Her Walk For Peace
Over €400,000 Awarded To Repair And Protect Three Kildare Heritage Structures