The irrationality and illogicality ground of judicial review, as developed in federal migration cases including Minister for Immigration v Li, applies to review of State administrative decision-making including ICAC findings. The supervisory jurisdiction of State Supreme Courts is constitutionally entrenched following Kirk v Industrial Relations Commission, and there is no basis for treating the irrationality ground as restricted to 'jurisdictional facts' in the conventional sense. ICAC's state of satisfaction under s 13(3A) of the ICAC Act is a precondition to valid exercise of power, reviewable on the basis that the satisfaction must be one that could be reached by a reasonable person understanding the statutory function, but the reviewing court does not itself need to be satisfied of the underlying facts.
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