The office of the Government Chief Whip has said that Senator Ivor Callely will not be travelling to the US to observe the mid-term elections there.
The Senator wrote to officials last month saying he had been invited to take part in the trip - which coincides with his suspension from the Upper House.
The trip came about because of Senator Callely's involvement with the Organisation for Security and Co-operation in Europe.
However a statement this evening on behalf of the Chief Whip said the Government had removed the Senator from the committee travelling to US.
A spokesman said the decision to remove Senator Callely was taken in June.