Renua leader Lucinda Creighton says she thinks a legal action by Denis O'Brien against a Dail Committee is "unwise".
Mr O'Brien is taking a case against all 10 members of the Committee on Procedures and Privileges.
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It's after the CPP rejected his complaint that Deputy Catherine Murphy abused parliamentary privilege when making claims about his banking arrangements with IBRC.
Deputy Creighton says it's essential to defend the integrity of the Houses of the Oireachtas.
