What happened
The appellant, Giang Nam Nguyen, arrived in Australia in 1998 and was granted a Spouse (subclass 100) visa on 19 May 2010. In 2014 he was convicted of supplying a large commercial quantity of a prohibited drug and sentenced to six years' imprisonment with a non-parole period of three years and three months. A delegate cancelled the visa under s 501(3A) of the Migration Act 1958 (Cth). A second delegate revoked that cancellation under s 501CA. On 5 December 2017 the Minister, acting personally under s 501BA(2), set aside the revocation and cancelled the visa, being satisfied that the appellant did not pass the character test and that cancellation was in the national interest. The Minister's statement of reasons recorded an "ongoing likelihood" that the appellant would reoffend ([52]) and, at the conclusion of the reasons, that the Minister "could not rule out the possibility of further offending" ([96]).
An application for judicial review was dismissed by the primary judge on 28 March 2019: Nguyen v Minister for Immigration and Border Protection [2019] FCA 423. The primary judge held that the Minister's assessment of reoffending risk was not unreasonable. It took account of the 2014 pre-sentence report (medium/low risk), the sentencing judge's view that the appellant was unlikely to reoffend and had good prospects of rehabilitation, the appellant's drug use history, prior convictions, and the fact that rehabilitation had not been tested in the community for a substantial period. The primary judge regarded the Minister's reasoning at [51] as disclosing a rational path to the overall conclusion at [52].
On appeal to the Full Court (Jagot, Robertson and Farrell JJ) the appellant sought leave to rely on an amended notice of appeal that advanced two grounds. Ground 1 alleged legal unreasonableness in the "ongoing likelihood" finding, elaborating in greater detail than had been put to the primary judge the absence of logical connection between the evidence and the conclusion, the failure to assess the chances of causal factors recurring, and the omission to weigh the appellant's shame, remorse and motivation to avoid separation from his wife and child. Ground 2, raised for the first time on appeal, relied on the Full Court's decision in Ibrahim v Minister for Home Affairs [2019] FCAFC 89 (delivered after the primary judgment) to argue that the Minister had misunderstood the operation of s 501BA(3). The Minister's reasons were said to show that he treated the decision to proceed under s 501BA(2) as necessarily involving the complete exclusion of any opportunity to be heard.
The Full Court granted leave to rely on the amended notice and, over objection, admitted an affidavit of the appellant's wife limited to the purpose of illustrating the kind of material that could have been placed before the Minister. The Court rejected ground 1 but upheld ground 2, finding that the Minister had misunderstood the nature of the power and that the error was material. The appeal was allowed, the primary judge's order dismissing the proceeding was set aside, and in its place the Court ordered that the Minister's decision of 5 December 2017 be set aside. Costs of the appeal were awarded against the Minister; the primary judge's costs order was left undisturbed because success was achieved on a ground not run below.
Why the court decided this way
The Full Court began by confirming that the Minister's assessment of reoffending risk was an evaluative exercise of fact and degree. At [29]-[37] the Court noted that the Minister had expressly referred to the sentencing judge's favourable remarks ([38]), the medium/low risk rating in the pre-sentence report ([35]), the appellant's remorse, community support and letters from church members ([48]-[50]). The Minister had then weighed against those matters the appellant's long-term social drug use that had escalated to daily ice use in the lead-up to the 2013 offence despite the presence of family support and employment, the fact that earlier non-custodial penalties in 2001 and 2002 had not deterred further offending 11 years later, and that rehabilitative efforts had not been tested in the community for a substantial period ([51]). The conclusion at [52] that there was an "ongoing likelihood" of reoffending was therefore open. The word "ongoing" meant no more than that the appellant had offended in the past and there remained a likelihood he would do so again; it did not import an unfounded assumption that a likelihood had already been established at some earlier point.
The Court rejected the submission that the Minister was required to make granular findings about the chances of each causal factor (drug dependence, marital discord, negative associates) recurring. It was not the Court's role to posit an alternative causal analysis and then condemn the Minister's for failing to adopt it. Nor was the Minister required to record a mathematical balancing exercise or to explain in greater detail why the adverse factors outweighed the favourable ones. The conclusion was one of fact and degree after considering all the material; minds might differ but the process was not irrational. Reliance on Muggeridge and Ogbonna was misplaced because those cases turned on irreconcilable internal contradictions between the Minister's own findings and the ultimate conclusion, contradictions absent here. Guo was also distinguished; the Minister had made findings about past events and used them as a guide to the future in the manner contemplated by that High Court authority. Accordingly proposed ground 1, although closely related to the ground argued below, failed on its merits.
Ground 2 succeeded because the Minister had misunderstood the nature of the power. The Full Court observed that the paragraphs in the Minister's reasons dealing with the statutory framework ([5]-[10]) were substantially identical to those in Ibrahim. In both cases the Minister had recorded that the rules of natural justice do not apply and had therefore not given the person an opportunity to make representations. In the present matter the Minister had gone further and expressly noted at [10] that five months had elapsed with no further information available and that the appellant's circumstances "may have since changed". At [31] the Minister had also acknowledged that information about rehabilitative efforts and ability to refrain from drug use "may now be dated". These passages, read with the composite language linking the exercise of s 501BA(2) power to the absence of natural justice, demonstrated that the Minister had proceeded on the basis that the two matters were locked together: if he chose to use the power he could not invite further submissions.
The Court accepted that s 501BA(3) removes any obligation to afford natural justice but does not prohibit the Minister from doing so if he or she considers it appropriate. The respondent did not contend for a different construction. Because the Minister had not recognised that option, he had not turned his mind to whether to request or permit further material addressing the five-month gap or the dated rehabilitation information. That was a misunderstanding of the nature of the power, not merely a failure to afford procedural fairness after the power had been correctly identified.
On materiality the Court declined to treat the case as a conventional procedural-fairness case requiring the appellant to prove by evidence precisely what he would have submitted. The error occurred at the anterior stage of identifying the power. The Court drew on the analysis in WZARH that procedural fairness is concerned with opportunity rather than outcome, but emphasised that the present error was more fundamental. It could not be said that the failure to consider whether to invite further material was logically independent of the decision or could have made no difference. The causal link was clear on the face of the reasons. The Court therefore concluded that the error was material, the decision was affected by jurisdictional error, and it must be set aside.
Before and after state of the law
Prior to Ibrahim the interaction between s 501BA(2) and (3) had not been the subject of authoritative Full Court analysis. Earlier authorities such as Minister for Immigration and Border Protection v WZARH and Re Minister for Immigration and Multicultural and Indigenous Affairs; Ex parte Lam had established that procedural fairness is essentially practical and directed to avoiding practical injustice, but they did not address the precise statutory construction of a provision stating that "the rules of natural justice do not apply". Ibrahim supplied that construction: the subsection removes the obligation but leaves the Minister free to afford an opportunity to be heard if he or she chooses. The present judgment applies that construction directly to materially identical ministerial reasons and confirms that a Minister who treats the subsection as a prohibition misunderstands the nature of the power.
On materiality the law before Hossain and SZMTA had sometimes been applied on the footing that any breach of procedural fairness was automatically jurisdictional. Those High Court decisions emphasised that materiality is essential to jurisdictional error and that the applicant bears the onus of showing that compliance could realistically have resulted in a different decision. The present judgment refines the application of that principle to cases of misapprehension of the power rather than classic procedural-fairness breaches. It holds that it will not always be necessary for the applicant to adduce concrete evidence of what would have been put forward; inferences may be drawn from the Minister's own recognition that circumstances may have changed and that information is dated. In that sense the decision narrows the circumstances in which an applicant must lead fresh evidence on judicial review and widens the scope for courts to infer materiality from the face of the reasons.
After this judgment, decision-makers exercising s 501BA(2) must demonstrate on the face of their reasons that they have understood they are not legally barred from inviting further submissions even though natural justice does not apply. Where the reasons record a passage of time since the last submissions and acknowledge that circumstances may have changed, a court is likely to infer that the opportunity to supply updated material could realistically have affected the outcome. The practical consequence is that ministerial statements of reasons in this cohort will need to address, at least briefly, whether the Minister considered but decided not to invite further input, or will need to be drafted so as to negative any inference of the Ibrahim-type misunderstanding.
Key passages with plain-English translation
At [42] the Court states: "At the level of legal principle, we agree that s 501BA(3) removes any obligation on the Minister to afford natural justice when exercising the power under s 501BA(2), but not as prohibiting the Minister from doing so." In plain English this means the law says the Minister does not have to give the person a hearing, but it does not say the Minister is forbidden from giving one if he thinks it would be useful. The Minister here appeared to think the statute locked the two things together.
Paragraph [43] continues: "There is no express recognition by the Minister that he could proceed under s 501BA(2) and provide natural justice to the appellant. The Minister's reasons suggest that he considered that the decision that he had to make was between proceeding under s 501BA(2) without providing natural justice, on the one hand, or not proceeding under s 501BA(2) at all, on the other." Translation: the reasons read as though the Minister thought "if I use this power I must deny a hearing; the only other choice is to do nothing". That binary view was wrong.
At [45] the Court notes the Minister's own language at [10] that "some five months have elapsed where no further information is available from him" and that circumstances "may have since changed", together with the observation at [31] that rehabilitative information "may now be dated". The Court infers that the Minister recognised it would be fair to invite further submissions but believed the statute barred him. The passage makes clear that the error was not abstract; it related to concrete, identified gaps in the information before the Minister.
Paragraph [54] contains the key materiality reasoning drawn from WZARH: "The concern of procedural fairness… is with procedures rather than with outcomes… Such a breach… is material… if it operates to deprive the offshore entry person of 'the possibility of a successful outcome'." Although the Court ultimately characterised the case as one of misunderstanding the power rather than a pure procedural-fairness breach, the citation underscores that the practical injustice lay in the denial of an opportunity that fairness in the statutory context required the Minister at least to consider giving.
Finally, at [55] the Court concludes: "As we have said, the present appeal is not on analysis a procedural fairness case. It is, in our opinion, not a case where it is incumbent on the appellant to prove, by evidence, what may have occurred had the Minister correctly understood the nature of the power he was exercising." In plain English this is the "gotcha" for practitioners: in this category of error you may not need to file an affidavit setting out exactly what your client would have said. The reasons themselves can supply the inference that the opportunity could have made a difference.
What fact patterns trigger this precedent
This precedent is triggered whenever a Minister exercises the personal power under s 501BA(2) and the statement of reasons contains three elements. First, language that treats the decision to proceed under s 501BA(2) and the exclusion of natural justice as a single composite proposition, typically by repeating the statutory formula that "the rules of natural justice do not apply" and immediately stating that the person has therefore not been given an opportunity to make representations. Second, an express or implicit recognition that a period of months has passed since the last submissions and that the person's circumstances "may have since changed" or that information about rehabilitation or risk "may now be dated". Third, reliance on the currency or otherwise of rehabilitation efforts as a factor in the risk assessment.
The precedent is not engaged if the Minister's reasons contain an affirmative statement that the Minister considered but decided, for identified reasons of urgency or overwhelming weight of material, not to invite further input. Nor is it engaged if the Minister simply applies the statutory statement that natural justice does not apply without any indication that he or she believed that choice foreclosed any discretionary opportunity to be heard. The fact pattern is therefore narrow but recurring in the cohort of s 501BA decisions made after the original revocation and before fresh submissions have been invited. Any case in which the Minister notes a temporal gap and dated information but does not address the possibility of inviting an update is now at high risk of being set aside on Ibrahim/Nguyen grounds.
How later courts have treated it
Although the judgment itself post-dates the primary decision and could not have been cited by earlier courts, it has already been used by the Full Court as the authoritative application of Ibrahim to a second set of materially identical ministerial reasons. The Court treated Ibrahim as indistinguishable on both the legal principle and the factual indicators of misunderstanding. It distinguished Muggeridge on the basis that the illogicality found in that case (rehabilitation findings irreconcilable with a conclusion of likely reoffending through resumed club contact) had no analogue here. Ogbonna was likewise distinguished because the statutory context there was s 501CA(4)(b)(ii) and the Minister had made an express finding of low risk that was then contradicted by the ultimate likelihood conclusion; no such contradiction appeared in the present reasons.
The judgment's treatment of Hossain, SZMTA and WZARH has clarified the boundaries of materiality analysis for errors going to the nature of the power rather than to the manner of its exercise. Later courts can be expected to cite [53]-[55] for the proposition that the onus of proving materiality does not invariably require fresh evidence of what would have been submitted when the error is anterior misapprehension of the power. The decision therefore operates as a bridge between the High Court's materiality jurisprudence and the specific statutory regime in s 501BA.
Still-open questions
Several questions remain unresolved by the judgment. First, how long must the gap be before a court will readily infer that the Minister's acknowledgement of possible changed circumstances makes the opportunity material? The present case involved five months; Ibrahim involved two and a half years. The Court did not set a bright-line test. Second, if the Minister's reasons contain a sentence expressly stating "I have considered whether to invite further submissions but have decided not to because…", does that cure the misunderstanding or merely shift the inquiry to the rationality of the reason given? The judgment does not address that drafting response.
Third, the Court left open whether, in a true procedural-fairness case rather than a misunderstanding-of-power case, the applicant must still lead evidence of what would have been put forward. It distinguished the present matter but did not retreat from the general statements in Hossain and SZMTA. Finally, the interaction between the admitted hearsay affidavit and the limitation placed on its use (not to prove the truth of the parole officer's statements but to show the kind of material that could have been placed before the Minister) leaves open whether more formal evidence of recent negative drug tests would have been required had the Court not admitted the material subject to that limitation. These questions will no doubt be tested in the next wave of s 501BA litigation.