Sebastian v Minister for Immigration

In *Sebastian v Minister for Immigration*, the applicant, Mr Sebastian, sought judicial review of a decision made by the Minister for Immigration. The dispute concerned the Minister's refusal to grant Mr Sebastian a visa, a decision Mr Sebastian contended was unlawful. The matter was heard in the Federal Circuit and Family Court of Australia.

The primary legal issue before the Court was whether the Minister's decision to refuse the visa application was affected by jurisdictional error. Specifically, the Court was required to consider whether the delegate of the Minister, in assessing Mr Sebastian's application, had failed to take into account a relevant consideration or had taken into account an irrelevant consideration, thereby vitiating the decision.

Judge Jarrett found that the delegate had indeed failed to consider a crucial piece of evidence that was relevant to the assessment of the visa application. This failure constituted a jurisdictional error, as it meant the delegate had not properly exercised the power conferred upon them by the relevant legislation. The Court applied the principles established in administrative law concerning the duty to consider all relevant material when making a decision.

Consequently, the Court quashed the Minister's decision to refuse the visa application and remitted the matter to the Minister for redetermination according to law.