Minister for Immigration and Border Protection v Eden

The appeal in Minister for Immigration and Border Protection v Eden involved a challenge to the Minister for Immigration and Border Protection's decision to cancel the respondent's visa on character grounds under section 501(2) of the Migration Act 1958 (Cth). The respondent, a New Zealand citizen with ties to Australia, was convicted of a sexual offence and sentenced to a term of imprisonment which was wholly suspended. The appeal centred on whether the primary judge correctly applied the principles of legal unreasonableness in his review of the Minister’s decision and if the Minister's exercise of discretion was legally unreasonable.

The court had to determine whether the primary judge appropriately assessed the Minister's decision-making process in light of the relevant principles of legal unreasonableness and whether the primary judge’s characterisation of the Minister’s decision as legally unreasonable was correct. The court also considered whether the delay in cancelling the respondent’s visa could be a factor in determining unreasonableness and whether the characterisation of the offence as "very serious" contributed to the conclusion of unreasonableness. The appeal raised significant questions about the appropriate scope of judicial review in discretionary decisions under migration law.

The court found that the primary judge had mischaracterised the Minister's decision by essentially remaking the decision based on his own assessment of what was reasonable. The court emphasised that the legality of the decision, not its merits, was the focus of the judicial review. The primary judge’s approach failed to respect the constraints inherent in the principles governing the review of discretionary decisions. The court held that the primary judge had not correctly applied the principles relevant to determining whether the decision was legally unreasonable. Consequently, the appeal was allowed, and the primary judge's orders were set aside, with the respondent's application for judicial review dismissed and costs awarded to the appellant.