Should the applicant be denied relief?
32 The Anshun estoppel doctrine can apply to judicial review of administrative decisions: Wong v Minister for Immigration & Multicultural & Indigenous Affairs [2004] FCAFC 242; 46 FCR 10 at [39] per Emmett, Conti and Selway JJ. An Anshun estoppel arises where the subject-matter sought to be raised is so relevant to the subject-matter in an earlier proceeding that it would have been unreasonable not to raise it in the earlier proceeding (Anshun at 598 and 602 per Gibbs CJ, Mason and Aickin JJ).
33 The Anshun doctrine has, however, been recognised as being subject to a "special circumstances" exception comprehending "situations where, for broad discretionary considerations related to notions of justice, [the principle] should not be applied with full rigour": BC v Minister for Immigration and Multicultural Affairs [2001] FCA 1669; 67 ALD 60 at [26] per Sackville J, and the authorities there cited. The Court has a discretion, if it determines that special circumstances exist, to allow an issue to be raised, even where it is found that the point was unreasonably omitted from the earlier proceeding: Wong at [38].
34 The proposed argument based on Ibrahim was available and could have been raised in the earlier proceeding. It was not precluded by any authority. If made out, it supports the same relief as was sought in the earlier proceeding (and the same relief is now sought), in relation to the same exercise of power, and thus involves the same parties. As proposed to be advanced, it turns on the construction of the Minister's statement of reasons, which was in evidence in the earlier proceeding.
35 Its success may be regarded as leading to conflicting judgments, in the sense discussed in Anshun (at 603-604), although there may be some debate as to the relevance of that where the judgments would not require conflicting things to be done and would therefore not put anyone at risk of being in contempt of one judgment by obeying the other. It is not uncommon for an administrative decision to be upheld on one challenge and then quashed on another. So it is not clear that the judgments would really conflict in the Anshun sense.
36 Be that as it may, the Ibrahim points "properly belonged to the subject of litigation, and which the parties, exercising reasonable diligence, might have brought forward at the time" (at 598, quoting Henderson v Henderson (1843) 3 Hare 100 at 115).
37 This means that it may be that the applicant's case will ultimately fail. However, it may not. There are a number of factors which might lead a court in due course to conclude that it was not unreasonable for the applicant not to have raised the Ibrahim points in his previous case, or that there are special circumstances such that even if it was unreasonable for him not to have previously raised those points he should not be barred from raising them in a new proceeding.
38 First, the applicant's case in reliance on Ibrahim is very strong, and it is fortified by the even more recent decision in Nguyen v Minister for Home Affairs [2019] FCAFC 128. Although not conceding that the applicant's case would succeed if allowed to go ahead, the Minister accepted that there is a strong similarity between the Minister's reasons in this case and the aspects of the reasons which were held in Ibrahim to be expressive of error.
39 In that regard, paragraphs [5] to [9] of the Minister's reasons in the present case are relevantly identical to paragraphs [10] to [14] of the Assistant Minister's reasons in Ibrahim (quoted at [29] of the judgment). They demonstrate that the Minister misunderstood that s 501BA(3) of the Act precluded him from providing the applicant with any form of hearing, and that he recognised that the applicant's circumstances may have changed in some relevant way in the time between the restoration of the applicant's visa by the AAT and the Minister's decision some 15 months later to cancel it.
40 Paragraphs [80] to [82] of the Minister's reasons in the present case are relevantly identical to paragraphs [97] to [99] of the Assistant Minister's reasons in Ibrahim (quoted at [67] of the judgment). They demonstrate that the Minister mistakenly understood that non-refoulement obligations under the Refugees Convention are the same as protection obligations under s 36(2)(a) of the Act and thus that both sets of obligations would necessarily be considered in the context of an application by the applicant for a Protection visa. That error constituted jurisdictional error in Ibrahim, and the case for it to amount to jurisdictional error in the present case must be regarded as strong.
41 Second, the applicant's liberty is at stake. His status in Australia, and his vulnerability to being returned to a country where he claims that he will be persecuted on account of his sexual orientation, are imperilled. He says that he will be "killed (stoned to death) without a doubt" if returned. These are powerful considerations relevant to the justice of applying Anshun against the applicant.
42 Taking factors one and two together, it may be that a court in due course will not uphold the Minister's reliance on Anshun to have the applicant's case dismissed because that would have the consequence of depriving the applicant of his liberty in Australia and risking his personal safety despite the Minister's decision otherwise likely being vitiated by jurisdictional error.
43 Third, s 501BA under which the Minister cancelled the applicant's visa had not been in the Act very long - it was introduced in 2014 by the Migration Amendment (Character and General Visa Cancellation) Act 2014 (Cth) - when the applicant brought his proceeding challenging the Minister's decision. There was therefore limited authority directly on the section, and there were only a handful of Full Court decisions. This is a rapidly developing area of law. Indeed, the grounds in Ibrahim on which the applicant wishes to rely were dismissed at first instance in that case.
44 The result is that although Ibrahim did not change the law and should rather be understood as revealing an aspect of the law that was not previously widely appreciated, and the grounds on which the applicant now seeks to rely were thus technically available to him from the outset, a court may in due course not regard the applicant as having acted unreasonably in not raising those grounds then. That is all the more so in circumstances where the applicant did not even consciously let alone tactically omit to raise those grounds; he and his then legal advisers were simply ignorant of them being available.
45 Fourth, the applicant, and persons similarly placed, are in a position of considerable vulnerability with limited access to legal services. He is in immigration detention; he is not able to earn an income; and he has access to minimal resources. Amongst the resources in very scarce supply to him and others like him are legal services. Counsel appears for the applicant in this proceeding pro bono, as he did before the Full Court. The applicant received a grant from Legal Aid NSW and was represented by counsel, although different counsel, before the primary judge but no grant of legal aid was made for the appeal.
46 Many cases such as these come before this Court where the applicant is unrepresented. From time to time the Court makes pro bono referrals, and very often public spirited counsel step forward to take the cases on pro bono. It is of enormous assistance to the Court and, obviously, to the applicants when they do so. But in any many other cases, no one comes forward. On the other side of the case, the Minister is well resourced and has panels of solicitors and counsel regularly appearing for him, including some of the finest public lawyers in the country. There is nothing approaching equality of arms.
47 All of this may be regarded as relevant to the reasonableness, objectively speaking, of the applicant's failure to raise the Ibrahim grounds in his previous case. It may also be relevant to whether or not there are special circumstances.
48 Finally, there is authority for the proposition that the Minister may be less vexed by a second proceeding than a private litigant would be: Kong v Minister for Immigration and Citizenship [2011] FCA 1345; 199 FCR 375 at [38] per Flick J. His Honour stated that "the absence on the part of a respondent Minister of any 'personal' interest in the outcome of a proceeding" and "the prospect that a respondent may be less 'vexed' by litigation than a private respondent" as considerations which may apply in a different manner in the context of public law litigation. See also Wong at [39].