Sinn Féin Dáil leader Caoimhghín Ó Caoláin was ordered from the House following heated exchanges with the Taoiseach over the Disability Bill.
Mr Ahern insisted that the Government continued to work long and hard with the disability groups.
"As I have said several times previously, no other Bill with which I have been involved over 20 years has taken so much times, effort and consultation."
Mr Ó Caoláin said that there was "great disappointment, and, indeed, anger in the disability sector and among people with disability at the Government's refusal to adopt their proposals to salvage the flawed Bill".
Mr Ahern said the disability group had met Minister of State Frank Fahey, himself and other Ministers many times and had asked for a whole host of amendments.
"A large number of amendments have been conceded, if not the five minimum points. There were 40 or 50 points.
"We have committed to review the legislation after five years, the definition of 'substantial restriction' is to be amended to include disordered thought process, there is to be provision for intervention early in life to ameliorate a disability, the option of chief executive officer of the Health Service Executive is to be removed from the Bill and so on."
However, said Mr Ahern, there was one amendment which was not possible. "That is to state in legislation a position on resources. That has never been done in Irish legislation." That had been explained to the group at length, he added. "I do not believe I will live to see a Minister include such a provision in a Bill."
Mr Ó Caoláin said it was not good enough for the Taoiseach to say rights-based legislation of the type sought did not exist in any other jurisdiction.
"So what? What is wrong with this country taking the lead in terms of a global approach to the needs of people with disability?
"What is wrong with Ireland setting out best practice and giving a lead in the world on such matters?
"It is time we did so and had the courage to give leadership in such important issues." After some further exchanges, Ceann Comhairle Dr Rory O'Hanlon said that Mr Ó Caoláin's time had concluded. When Mr Ó Caoláin continued to speak, Dr O'Hanlon warned him that if he "opens his mouth once more", he would ask him to leave the House.
"I will not give the chair that satisfaction," said Mr Ó Caoláin.
"Very well," said Dr O'Hanlon, "Deputy Ó Caoláin will leave the House."
