Plaintiff M90 of 2010 v Commonwealth of Australia & Ors

The plaintiff, identified as M90 of 2010, brought proceedings against the Commonwealth of Australia and other respondents. The core of the dispute concerned the lawfulness of the plaintiff's detention and the validity of certain decisions made by the Minister for Immigration and Citizenship. The matter came before Hayne J of the High Court of Australia.

The central legal issue before the Court was whether the Minister's decision to refuse to grant a protection visa to the plaintiff was vitiated by an error of law. Specifically, the Court was required to consider whether the Minister, in making that decision, had failed to take into account a relevant consideration or had taken into account an irrelevant consideration, thereby breaching the *Migration Act 1958* (Cth).

Hayne J's reasoning focused on the proper interpretation of the Minister's statutory obligations under the *Migration Act*. His Honour applied the principles of administrative law concerning the exercise of ministerial discretion, particularly the requirement to consider all relevant factors and disregard irrelevant ones. The Court examined the evidence before the Minister and the reasons provided for the decision to determine if there was a demonstrable failure to comply with these legal requirements.

The Court found that the Minister's decision was not vitiated by an error of law. Accordingly, the application for judicial review was dismissed.