3.5 The contention that Mr Yao had proved Chinese citizenship on the balance of probabilities (grounds 5 and 10)
45 The short answer to Mr Yao's contention that he had proved that he currently held Chinese citizenship is that s 33(7) of the Act imposes an obligation upon the Minister, and, therefore, the Tribunal on review, not to approve the person renouncing his or her citizenship unless "satisfied" that the criteria in subs (a) or (b) are met. The existence of that obligation is consistent with the apparent purpose of the provision being to ensure that a person seeking to renounce his or her citizenship does not become stateless, in line (as the Tribunal observed) with Australia's obligations under the Convention on the Reduction of Statelessness op cit; Explanatory Memorandum, Australian Citizenship Bill 2005 (Cth) at 44. The reasons of the Tribunal reveal that Mr Yao simply failed to establish those matters to its satisfaction at which point the Tribunal had no option under s 33(7) of the Act but to refuse to allow him to renounce his Australian citizenship. There is no error of law in that approach provided that the state of satisfaction was lawfully reached.
46 In this regard, Mr Yao's submissions focussed upon the contention that the Tribunal or the primary judge had erred in failing to find that the criteria in s 33(7)(a) and (b) were established on the balance of probabilities. That contention is misconceived at a number of levels.
47 First, Mr Yao's appeal to the primary judge was made under s 44 of the AAT Act. That section permits an appeal only on a question of law, such an 'appeal' being in truth an application for judicial review in the original jurisdiction of the Court. It is not the role of the Court on judicial review to undertake an assessment of the correctness of findings of fact made by the Tribunal. The jurisdiction of this Court, in considering an appeal from the decision of the primary judge, is similarly constrained. In considering the correctness of the decision by the primary judge, the Full Court is restricted to a determination of whether the primary judge correctly held that there was no error of law in the Tribunal's decision. Mr Yao's invitation to this Court to find that he held Chinese nationality on the balance of probabilities constitutes an impermissible invitation to engage in a purely factual exercise.
48 Secondly, while a Court in civil litigation has to decide where the truth lies on the balance of probabilities, administrative decision-making is of a different nature. As Brennan CJ, Toohey, McHugh and Gummow JJ held in Minister for Immigration and Ethnic Affairs v Wu Shan Liang (1996) 185 CLR 259 at 282, "A whole range of possible approaches to decision-making in the particular circumstances of the case may be correct in the sense that their adoption by a delegate would not be an error of law".
49 Thirdly, in the context of s 33(7) of the Act, the criteria which must be met in order to avoid a refusal of the application for renunciation of citizenship are expressed in terms of whether or not the Minister holds the requisite state of satisfaction as to the matters identified in s 33(7). In other words, the criteria turn upon the existence of a subjective state of mind in the decision-maker. They do not turn upon whether or not the person seeking to renounce his or her citizenship is, as a matter of objective fact, a national or citizen of a foreign country, or will be immediately after the approval: see, by analogy, Minister for Immigration and Ethnic Affairs v Wu Shan Liang op cit at 274-275.
50 Turning then to Mr Yao's specific grounds of appeal, in relation to ground 5 of his notice of appeal, Mr Yao contends that the primary judge ought to have found that the Tribunal failed to take into account a relevant consideration, namely, Mr Yao's sworn evidence that he is a citizen of China and his expired Chinese passport. In support of the ground, Mr Yao pointed to the fact that his affidavit was not specifically referred to in the Tribunal's reasons and, while the Tribunal listed the passport with the applicant's other evidence in support of his application, it did not take the passport into account in any intellectual process.
51 Similarly, in relation to ground 10, Mr Yao's complaint is that the primary judge ought to have found that the Tribunal ignored the fact that his affidavit was "prima facie evidence to prove Mr Yao is a citizen of China", and not merely a statement of his belief that he was a citizen of China.
52 However, the legal obligation on the Tribunal is to address an applicant's claim or integer of a claim, as opposed to referring to every piece of evidence or every contention made in support of the claim: LVR (WA) Pty Ltd v Administrative Appeals Tribunal (2012) 203 FCR 166 at 198 [143] (North, Logan and Robertson JJ); see also the helpful discussion in Australian Postal Corporation v Hughes (2009) 50 AAR 267 at 271-273 [12]-[19] (Flick J). While in some cases a failure to refer to material may lead to a conclusion that there has been jurisdictional error, in other cases the evidence may not have been specifically mentioned by the Tribunal because the evidence was irrelevant or regarded as of little weight. In this case, the Tribunal referred to the salient fact deposed to in the affidavit, being Mr Yao's belief that he had maintained his Chinese citizenship at [23] of its reasons (albeit pointing also to the apparent tension between that belief and other aspects of his case). The Tribunal had also specifically referred to the expired passport as evidence put forward by Mr Yao in support of his application. Bearing in mind that the Tribunal's reasons are not to be read "with an eye keenly attuned to error", it cannot be inferred in these circumstances that the evidence in question was ignored. Rather, properly read, it is apparent from the Tribunal's reasons, especially at [25], that it regarded the evidence as insufficient
53 That being so, the short answer to Mr Yao's submissions is that it was open to the Tribunal to give the assertion in Mr Yao's affidavit and the expired passport such weight, if any, as it saw fit. No error of law lies in the Tribunal having regarded the sworn assertion by Mr Yao of his Chinese citizenship together with the other evidence as insufficient to satisfy it of the matters asserted. It is not the role of the primary judge, or of this Court, to determine whether any greater weight ought to have been attached to Mr Yao's evidence. That would require the Court to embark upon an impermissible review of the factual merits of Mr Yao's application.