MZXLD v MIAC & Anor

The applicants, MZXLD and another, sought judicial review of decisions made by the Minister for Immigration and Citizenship (MIAC) and the second respondent. The dispute concerned the lawfulness of decisions to refuse to grant visas to the applicants.

The primary legal issue before the High Court was whether the Minister's delegate had properly exercised the power conferred by s 48B of the *Migration Act 1958* (Cth) to refuse to make a protection visa application a "non-refoulement undertaking" for the purposes of s 36(2)(aa) of the Act. This involved determining the scope of the Minister's discretion under s 48B and the criteria that must be considered when exercising that power.

The Court held that the delegate's decision was vitiated by an error of law. Gleeson CJ and Kiefel J found that the delegate had failed to consider relevant considerations and had taken into account irrelevant considerations in the exercise of the s 48B power. Specifically, the delegate had improperly focused on the applicants' alleged lack of credibility regarding their claims for protection, rather than assessing whether the circumstances warranted the refusal of the application under s 48B. The Court reiterated that the s 48B power is a broad discretion that requires a holistic assessment of all relevant factors, including humanitarian concerns, and is not merely a mechanism to reject claims lacking credibility.

The High Court ordered that the decisions of the Minister's delegate be quashed and remitted the applications to the Minister for reconsideration according to law.