Plaintiff S232-2019 v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs

The applicant, identified as Plaintiff S232-2019, sought judicial review of a decision made by the Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs. The dispute concerned the lawfulness of the Minister's decision to refuse to grant the applicant a protection visa. The matter was heard by Gageler J of the High Court of Australia.

The central legal issue before the Court was whether the Minister's decision to refuse the protection visa was affected by jurisdictional error. This involved determining whether the Minister, in reaching their decision, had failed to exercise a power conferred upon them by the *Migration Act 1958* (Cth) or had exercised that power in a manner that was legally impermissible. Specifically, the Court considered whether the Minister's assessment of the applicant's claims for protection was so flawed as to vitiate the decision.

Gageler J reasoned that a failure to exercise a power conferred by the *Migration Act* occurs when a decision-maker misunderstands the nature of the power they are required to exercise, or when they fail to take into account a matter that the Act requires them to consider, or take into account a matter that the Act prohibits them from considering. His Honour found that the Minister's delegate had failed to properly consider the applicant's claims for protection in accordance with the relevant provisions of the *Migration Act* and the *Migration Regulations 1994* (Cth). This failure constituted a jurisdictional error, rendering the decision unlawful.

The High Court ordered that the application for judicial review be granted, and the decision of the Minister be quashed.