The Sinn Fein president says his party is not trying to undermine the Ceann Comhairle.
Opposition parties criticised Sean Barrett for cancelling a Dail debate during the week on a Commission of Inquiry into Garda malpractice.
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The Ceann Comhairle said it may overlap with a High Court case being taken by Alan Shatter.
Fianna Fail has called on Mr Barrett to withdraw claims that the opposition is trying to undermine him.
Sinn Fein President Gerry Adams says responsibility for the cancelllation of the debate lies with the Taoiseach.