Pearson v Commonwealth of Australia & Ors; JZQQ v Minister for Immigration, Citizenship and Multicultural Affairs & Anor; Tapiki v Minister for Immigration, Citizenship and Multicultural Affairs

The High Court of Australia considered three applications for judicial review concerning the lawfulness of detention and the validity of certain ministerial decisions. In *Pearson v Commonwealth of Australia & Ors*, the applicant challenged his detention. In *JZQQ v Minister for Immigration, Citizenship and Multicultural Affairs & Anor*, the applicant sought to challenge the lawfulness of his detention and the validity of a decision made under the *Migration Act 1958* (Cth). Similarly, in *Tapiki v Minister for Immigration, Citizenship and Multicultural Affairs*, the applicant also challenged the lawfulness of their detention and the validity of a ministerial decision.

The central legal issues before the High Court were whether the detention of each applicant was authorised by law, and in the case of *JZQQ* and *Tapiki*, whether the relevant ministerial decisions were valid. These issues engaged fundamental questions about the scope of executive power, the interpretation of statutory provisions governing detention, and the constitutional framework for the exercise of such powers. The Court was required to determine the precise meaning and application of provisions within the *Migration Act 1958* (Cth) and their interaction with constitutional principles.

The Court's reasoning focused on the interpretation of section 189 of the *Migration Act 1958* (Cth), which mandates detention for non-citizens who do not hold a visa. The majority held that section 189 imposes a non-discretionary obligation on the Minister to cause a non-citizen to be detained. Crucially, the Court found that this obligation continues for as long as the non-citizen remains in the migration zone without a visa. The Court also considered the validity of decisions made under other provisions of the Act, finding that in the circumstances of *JZQQ* and *Tapiki*, the decisions were not validly made, leading to the conclusion that their detention was not authorised by law. The Court applied principles of statutory interpretation, including the presumption that Parliament does not intend to legislate contrary to fundamental rights, and the principle that executive power must have a clear statutory basis.

In *Pearson*, the application was dismissed. In *JZQQ* and *Tapiki*, the applications were upheld, and the Court made declarations that the detention of each applicant was not authorised by law.