SZHPS v MIAC & Anor

The applicants, SZHPS and MIAC, brought proceedings before the Full Federal Court of Australia concerning the interpretation and application of the *Migration Act 1958* (Cth) and related regulations. The core of the dispute involved the validity of certain decisions made by the Minister for Immigration and Multicultural Affairs (MIAC) in relation to the applicants' immigration status.

The Full Federal Court was required to determine, among other things, whether the Minister had properly exercised their powers under the *Migration Act* when making the impugned decisions. Specifically, the court considered whether the Minister had taken into account irrelevant considerations or failed to take into account relevant considerations, and whether the decisions were otherwise affected by jurisdictional error. The proper construction of specific provisions within the *Migration Act* and its subordinate legislation was central to these determinations.

In their reasoning, Kirby and Heydon JJ applied established principles of administrative law, including the grounds for judicial review of administrative decisions. The court examined the evidence before the Minister and the reasons provided for the decisions, assessing whether these aligned with the statutory requirements and the principles of procedural fairness. The judges considered relevant High Court authorities on the scope of ministerial discretion and the tests for jurisdictional error. The court ultimately found that the Minister's decisions were affected by jurisdictional error and were therefore invalid.