NAIY v MIMIA

The High Court of Australia heard an appeal concerning the interpretation of the *Migration Act 1958* (Cth) in a dispute between NAIY and MIMIA. The core of the disagreement revolved around the validity of a decision made by the Minister for Immigration and Multicultural and Indigenous Affairs to refuse to revoke a deportation order. NAIY, a non-citizen, sought to have the deportation order cancelled, but the Minister's delegate declined this request.

The central legal question before the High Court was whether the delegate's decision was vitiated by a failure to consider relevant considerations, specifically NAIY's submissions regarding his rehabilitation and the potential impact of deportation on his family. The court was required to determine the scope of the Minister's (and by extension, the delegate's) duty to consider all relevant material when exercising the power to revoke a deportation order under section 501(1) of the *Migration Act*.

McHugh and Heydon JJ, in their joint judgment, affirmed that the delegate's decision-making process must be informed by all material facts and circumstances that are relevant to the exercise of the power. They held that the delegate had failed to adequately consider NAIY's evidence of rehabilitation and the humanitarian concerns raised, thereby rendering the decision legally flawed. The judges emphasised that while the Minister has broad discretion, this discretion must be exercised according to law, which includes a duty to consider relevant factors and ignore irrelevant ones.

The High Court allowed the appeal, quashed the delegate's decision, and remitted the matter to the Minister for reconsideration according to law.