The Public Expenditure Minister has been criticised by Galway West TD Mairead Farrell for flying business class to an exclusive conference in Washington DC.
The Bilderberg Conference is an invite only event held in the US to bring politicians and large business interests together.
It runs under Chatham House rules - meaning discussions are strictly off the record.
Sinn Féin TD Mairead Farrell has criticised Minister Jack Chambers for his attendance and his five-star hotel