What happened
Keith Antony Stretton, born in England in 1954, arrived in Australia in 1961 at the age of six and lived there for more than fifty years. In 2009, when aged 54 and affected by alcohol, he committed three offences of indecent treatment of a child under 12 who was his lineal descendant—his granddaughter aged eight or nine—by touching and rubbing her vagina directly on the skin on three occasions while she was in his care. The offences caused the child soreness. In June 2013 he was convicted in the District Court of Queensland and sentenced to two years' imprisonment, to be released after six months upon entering a two-year good behaviour bond. He was released on 23 December 2013.
While still in custody the Department of Immigration and Border Protection gave notice under s 501(2) of the Migration Act 1958 (Cth) that it was considering cancelling his Class BB Subclass 155 Five Year Resident Return visa. Mr Stretton was invited to, and did, make detailed submissions supported by statutory declarations from family members, psychological reports, a general practitioner's letter concerning his youngest daughter's depression, and other material. The Department prepared a comprehensive issues paper that attached all of Mr Stretton's material and analysed factors both for and against cancellation. On 28 October 2014 the Minister personally decided to cancel the visa. The Minister's statement of reasons (paras 36-55 of the Full Court judgment) recorded that Mr Stretton did not pass the character test because of his substantial criminal record (s 501(6) and (7)), that the offences were serious, that even a low risk of re-offending could cause serious harm to a member of the Australian community, and that although Mr Stretton's ties to Australia were "long and deep", he had spent his formative years here, had blameless periods of adulthood, showed remorse and would suffer substantial hardship together with his wife and family, those countervailing considerations were not sufficient to justify not cancelling the visa. The Minister used the phrase "forfeit the privilege of being able to remain in Australia" (para 51 of his reasons).
Mr Stretton was taken into immigration detention. He commenced judicial review proceedings in the Federal Court. The primary judge rejected most grounds but upheld the ground that the decision was legally unreasonable in the sense explained in Minister for Immigration and Citizenship v Li [2013] HCA 18; 249 CLR 332. At [57]-[60] the primary judge characterised the offences as at the lower end of the range of paedophilia, noted the low risk of re-offending, emphasised Mr Stretton's lifelong residence, absence of ties to the United Kingdom, strong family relationships (except with the victim's mother), blameless adult life until 2009, and the agonising dilemma for his wife. The primary judge concluded that, viewed objectively, the decision was unreasonable in the Li sense and amounted to using "a sledgehammer to crack a nut" (primary judge at [60], citing French CJ in Li at [30]).
The Minister appealed. Mr Stretton filed a notice of contention asserting inflexible application of policy and failure to consider the effect on his youngest daughter. He also sought leave to adduce fresh evidence of a radio interview given by the then Minister eight months after the cancellation decision. The Full Court (Allsop CJ, Griffiths and Wigney JJ) unanimously allowed the appeal, set aside the primary judge's orders, dismissed the judicial review application with costs, dismissed the notice of contention and the fresh evidence application, and ordered Mr Stretton to pay the costs of the appeal.
Why the court decided this way
The Full Court held that the primary judge had misapplied the principles of legal unreasonableness articulated in Li and in Minister for Immigration and Border Protection v Singh [2014] FCAFC 1; 231 FCR 437. Allsop CJ (at [2]-[14]) emphasised that legal unreasonableness and jurisdictional error concern the lawful limits of power. Parliament is taken to intend that statutory power will be exercised reasonably (Li at [26], [29], [63], [88]). The content of reasonableness is not found in rigid definitions or exhaustive categories of "arbitrary", "capricious", "irrational" or "unjust" (Allsop CJ at [2]-[3]). Rather, the concept is derived from the supervisory judicial task and is informed by the terms, scope and purpose of the statute and by common law values including rejection of unfairness, arbitrariness and respect for human dignity (Allsop CJ at [9]).
Griffiths J (at [52]-[59]) and Wigney J (at [92]-[103]) reiterated that the standard is statute-specific. Section 501(2) confers a broad substantive discretion on the Minister (or delegate) once the preconditions of reasonable suspicion and failure to satisfy the character test are met. The object in s 4 of the Migration Act—to regulate in the national interest the coming into and presence in Australia of non-citizens—permeates the legislation. One central purpose of s 501 is protection of the Australian community from harm that may result from criminal activity by non-citizens (Minister's reasons at para 37; Griffiths J at [70(b)]). The discretion is not confined to that purpose; personal circumstances, family hardship and long residence must also be weighed (Griffiths J at [70(d)]).
The Minister's reasons disclosed an evident and intelligible justification. He accepted the risk of re-offending was low but reasoned that if re-offending occurred the harm could be serious, particularly to vulnerable children (Minister's reasons at paras 23, 54; Griffiths J at [72]). He gave weight to Mr Stretton's long residence since age six, deep family ties, positive contributions, remorse and the hardship removal would cause, yet concluded those factors were not sufficient to outweigh the protective imperative (Minister's reasons at paras 52-54). That evaluative balancing was open to the Minister; reasonable minds could differ (Allsop CJ at [17], [22]; Griffiths J at [74]; Wigney J at [101]-[102]).
The primary judge's error was to substitute his own view. By describing the offences as at the "lower end of the range of depravity", by listing the countervailing factors at length and by concluding the decision was "in excess of what, on any view, was necessary" and a "sledgehammer to crack a nut", the primary judge asked whether cancellation was objectively reasonable or necessary rather than whether a reasonable Minister could reach the view the Minister reached (Allsop CJ at [21], [60]; Griffiths J at [75]-[76]; Wigney J at [103]). That approach exceeded the supervisory role. The court does not review the merits or decide what it would have done (Li at [66]; Allsop CJ at [8], [12]; Griffiths J at [56], [76]; Wigney J at [92]). The decision was within the "area of decisional freedom" (Li at [66]; Allsop CJ at [7]; Wigney J at [92]).
The notice of contention was dismissed because the reasons showed the Minister had considered a wide range of individual circumstances and had not inflexibly applied any policy (Griffiths J at [80]-[81]). The radio interview statements, even if admitted, were equivocal, made months later at a level of generality and did not prove a rigid policy was applied to Mr Stretton (Griffiths J at [82]-[84]). The effect on the youngest daughter was before the Minister in the brief and submissions; no inference of non-consideration arose (Griffiths J at [86]).
Before and after state of the law
Prior to this judgment the law on legal unreasonableness had been authoritatively restated in Li. The High Court made clear that reasonableness is an essential implied condition of statutory power (Li at [26], [29], [63], [88]), that the standard is not limited to the extreme "Wednesbury" formulation, and that a decision may be unreasonable if it lacks an evident and intelligible justification even if no specific error can be identified (Li at [68], [76]). Singh had applied those principles to an adjournment refusal, stressing that the inquiry is fact-dependent, statute-specific and that reasons ordinarily provide the focus for review (Singh at [42]-[48]).
This judgment built directly on Li and Singh in the context of a substantive, non-procedural power exercised personally by the Minister under s 501(2). It clarified that the intensity of review remains stringent for substantive decisions even though the power is broad and evaluative (Griffiths J at [71]). The court must still ask whether the decision is within the range of lawful outcomes having regard to the statutory purpose of community protection, not whether the court considers the outcome proportionate or necessary (Allsop CJ at [21]; Griffiths J at [75]). The judgment warned against over-categorisation of descriptive phrases and against using proportionality to invite merits review (Allsop CJ at [10], [73]; Griffiths J at [57]).
After the judgment the law is clearer that, in visa cancellation cases involving child sex offences, even a low risk of re-offending may lawfully be regarded as unacceptable if the potential harm is serious, provided the Minister has engaged with the countervailing personal circumstances. The obligation under s 501G(1)(e) to give reasons assists review but does not convert the task into merits review; superficial rhetoric such as "privilege" or "expectations of the Australian community" is to be approached cautiously but does not automatically invalidate a decision (Allsop CJ at [26]; Griffiths J at [70(d)]). The distinction between procedural discretions (Li, Singh) and substantive powers is relevant to the intensity of scrutiny, though the presumption of reasonableness applies to both (Griffiths J at [71]).
Key passages with plain-English translation
Paragraph [11] of Allsop CJ: "The task is not definitional, but one of characterisation: the decision is to be evaluated, and a conclusion reached as to whether it has the character of being unreasonable, in sufficiently lacking rational foundation, or an evident or intelligible justification, or in being plainly unjust, arbitrary, capricious, or lacking common sense having regard to the terms, scope and purpose of the statutory source of the power, such that it cannot be said to be within the range of possible lawful outcomes as an exercise of that power."
Plain English: Do not look for a magic legal formula. Instead, look at the whole decision in its statutory setting and decide whether it is so lacking in reason or so unfair that no reasonable person given this statute could have made it. If it is still inside the lawful range, the court cannot interfere even if it would have decided differently.
Paragraph [21] of Allsop CJ: "It is not a correct approach for the Court on judicial review to assess the lawfulness of the decision under s 501 by asking whether the exercise of discretion was necessary for the purpose. That an assessment whether the decision-maker's conclusion was legally unreasonable may involve some consideration of disproportionality does not authorise the Court to decide for itself what is necessary for the relevant purpose and to declare a decision beyond that assessment as unreasonable. The correct question, or perspective, if one is looking at the outcome in question, is not whether the Court thinks the decision is reasonable, or necessary for the purpose, or not, as the case may be; rather it is whether a decision-maker could reasonably come to the conclusion."
Plain English: The judge cannot ask "Is this cancellation really needed?" or "Is it over the top?" and then strike it down because the judge thinks so. Even if disproportionality is relevant, the question is always whether a reasonable Minister, looking at the same material, could have cancelled the visa. The primary judge asked the wrong question.
Paragraph [72] of Griffiths J: "I consider that the Minister did not exceed his lawful authority in determining to cancel Mr Stretton's visa. I respectfully disagree with the primary judge's view that the Minister put to one side the evaluation against countervailing considerations that the likelihood of Mr Stretton's reoffending was low. Rather, the statement of reasons reveals that the Minister properly evaluated the countervailing considerations to which I have referred to above which were in favour of not cancelling Mr Stretton's visa with the Minister's primary concern to protect the Australian community in the event that Mr Stretton reoffended, even where the risk of that occurring was accepted to be low. I consider that it was reasonably open to the Minister to reach the ultimate conclusion which he did after properly weighing the relevant competing considerations."
Plain English: The Minister did not ignore the low risk or the family hardship. He looked at both and decided protection of the community came first. That decision was open to him; the primary judge should not have replaced it with his own balancing.
Paragraph [92] of Wigney J: "The critical point is that, in reviewing a decision on the ground of legal unreasonableness, the Court's role is strictly supervisory. It is concerned with determining whether there has been a lawful exercise of power having regard, in particular, to the terms, scope and purpose of the statute conferring the power. In circumstances where reasonable minds might differ about the outcome of, or justification for, the exercise of power, or where the outcome falls within the range of legally and factually justifiable outcomes, the exercise of power is not legally unreasonable simply because the Court disagrees, even emphatically, with the outcome or justification."
Plain English: The court's job is to supervise legality, not to decide the best outcome. If reasonable people could reach different conclusions, the court cannot overturn the Minister's choice just because the judge would have kept Mr Stretton in Australia.
What fact patterns trigger this precedent
This precedent is triggered where a non-citizen with long Australian residence commits a sexual offence against a child, is assessed as presenting a low but non-zero risk of re-offending, and the Minister, after considering family hardship, absence of ties to the home country, remorse, positive contributions and the objective seriousness of the offending, concludes that the protective purpose of s 501 outweighs those factors. The fact pattern includes a detailed statement of reasons that expressly addresses the low risk, the potential for serious harm, the countervailing personal matters listed in the Department's brief, and reaches a conclusion that the risk is unacceptable (see Minister's reasons at paras 50-55, applied at Griffiths J [72]-[73]).
It applies whenever the primary judge or Federal Circuit Court has characterised the offending as "lower end", listed the hardship in detail, and then labelled the cancellation a disproportionate "sledgehammer" or "in excess of what is necessary". The precedent confirms that such language reveals the court has asked itself the wrong question. It is engaged in any s 501(2) cancellation (or s 501(1) refusal) of a long-term resident where the Minister personally decides, gives reasons under s 501G(1)(e), and the reasons show an intelligible balancing of community protection against individual hardship.
The precedent is not confined to child sex offences; the same reasoning governs any case in which the statute's protective purpose collides with strong countervailing human factors and the Minister chooses protection. The key trigger is an evaluative decision that falls inside the broad discretion conferred on the Minister or delegate, even if minds might differ on the outcome.
How later courts have treated it
The judgment itself carefully treats Li and Singh as setting the governing framework and applies them without gloss (Allsop CJ at [4]-[14], Griffiths J at [50]-[62]). It follows Li's insistence that the standard is statute-specific and that the court must not remake the decision (Li at [66] applied at Allsop CJ [8], [12], Griffiths J [56]). It follows Singh's propositions that unreasonableness is fact-dependent, that reasons ordinarily supply the focus, and that it will be rare for a court to find unreasonableness where reasons disclose justification (Singh at [42]-[48] applied at Griffiths J [61]).
The judgment cites and follows the classic authorities on the limits of discretion—Peko-Wallsend, Avon Downs, House v The King, Shrimpton, Kruger—without extending them beyond the principles stated in the source text (Allsop CJ at [5]). It treats the observations of Kirby J in Re Patterson; ex parte Taylor as confirming that even a decision informed by "national interest" remains reviewable for unreasonableness but does not authorise the court to substitute its own view (Griffiths J at [48]-[49]). The judgment applies NBMZ for the proposition that the discretion, though broad, is confined by the subject matter, scope and purpose of the Act and cannot be exercised arbitrarily or capriciously (Griffiths J at [66]-[67]).
The Full Court rejects any reading of Li that would permit the primary judge to decide for himself what is "necessary" or proportionate; that treatment confines the proportionality discussion in Li (at [73]-[74]) to an evaluative tool rather than a merits invitation (Allsop CJ at [10], [21]; Griffiths J at [57]).
Still-open questions
The judgment leaves open the full scope and purposes of s 501 beyond community protection. Allsop CJ (at [16], [26]) expressly states there is no call to examine other purposes and doubts whether phrases such as "expectations of the Australian community" or "privilege of remaining" can surround a decision with non-justiciable political content, yet finds it unnecessary to resolve the point. The precise weight to be given to such language in future reasons therefore remains open, provided the reasons otherwise demonstrate a balanced weighing of statutory considerations.
The judgment does not decide whether the intensity of review differs according to whether the power is exercised by the Minister personally or by a delegate (Griffiths J at [70(c)] notes the absence of merits review for personal decisions but does not hold that this enlarges the area of decisional freedom). The relevance of broader policy or political considerations, when expressed as community expectations rather than as a proxy for protection, is not determined (Allsop CJ at [26]).
The interplay between legal unreasonableness and the obligation to consider the best interests of children under international obligations or s 501G reasons requirements is not explored, although the Minister did consider the best interests of Mr Stretton's grandchildren (Minister's reasons at para 38). Whether a statement of reasons that uses "privilege" language without more can ever ground a separate ground of review is left for another day (Griffiths J at [70(d)]).
Finally, the judgment notes that the task of assessing legal unreasonableness is evaluative yet rooted in law, so that on appeal there is only one correct legal answer and House v The King principles do not apply (Allsop CJ at [25]). The precise appellate standard where the primary judge's characterisation of unreasonableness is itself challenged therefore remains a live procedural question for future cases.
Gotchas
Most practitioners assume that a long-term resident with low recidivism risk and profound family hardship will necessarily prevail on unreasonableness review. This judgment demonstrates the opposite: even after 48 years in Australia, with a suspended sentence and strong subjective factors, the Minister may lawfully treat even a low risk of child sexual re-offending as unacceptable. Another gotcha is the primary judge's use of "necessary" and "sledgehammer" language; the Full Court treats that as a bright-line indicator that the judge has crossed into merits review. Finally, the obligation to give reasons under s 501G(1)(e) cuts both ways: while it allows the court to see the justification, it also makes it harder to infer unreasonableness from outcome alone when the reasons show the required balancing has occurred. Compliance professionals advising clients with historical child-sex convictions should not assume Li-style adjournment unreasonableness will translate to substantive visa cancellation cases.