Was the decision not to take oral evidence from the two witnesses legally unreasonable?
37 The appellant gave the Tribunal written notice that he wanted the Tribunal to obtain oral evidence from Mr B and Dr T. But (in contrast to the position in CZBH) he did not do so within the prescribed time. If he had, then, as s 426(3) makes clear, the Tribunal would have been required to consider his wishes, but it would not have been required to fulfil them.
38 The Minister submitted that the appellant's case depends on the Tribunal being obliged in the circumstances of the case to receive oral evidence from the authors of the statements, despite the fact that his request was made outside the time allowed by s 426(2) and when, even if it had been made within that time, the Tribunal's only obligation would have been to consider the request. The Minister argued that the appellant could be in no more privileged position because his request failed to trigger the obligation under the subsection than he would have been had his request fallen within its terms.
39 This submission is misconceived. The appellant's case is not that the Tribunal was obliged to call them; it is that the Tribunal had a discretion to do so and that it was obliged to exercise that discretion reasonably, both of which propositions the Minister rightly accepted. That discretion is conferred by s 429A of the Migration Act and it is independent of the regime in s 426. Every statutory discretion must be exercised reasonably: Minister for Immigration and Citizenship v Li (2013) 249 CLR 332 and the cases referred to there. The legislature is taken to have so intended: Kruger v The Commonwealth (1997) 190 CLR 1 at 36 (Brennan CJ); Li at [28]-[29] (French CJ), [63] (Hayne, Kiefel and Bell JJ), and [88]-[89] (Gageler J). The "indicia" of legal unreasonableness are to be found in the subject-matter, scope and purpose of the particular statutory provisions "in issue" in a given case: Minister for Immigration and Border Protection v Singh (2014) 231 FCR 437 at [48].
40 As the plurality explained in Li, at [76], a court may infer unreasonableness in the exercise of a statutory discretion where, even if reasons are given, it is not possible to understand how the decision was reached (see, too, French CJ at [27]). Their Honours said (also at [76]) that "[u]nreasonableness is a conclusion which may be applied to a decision which lacks an evident and intelligible justification". In the court below and on appeal, the appellant contended that the decision not to take oral evidence from the two witnesses was one lacking in intelligible justification.
41 The Full Court said in Singh at [47]:
The "intelligible justification" must lie within the reasons the decision-maker gave for the exercise of the power - at least, when a discretionary power is involved. That is because it is the decision-maker in whom Parliament has reposed the choice, and it is the explanation given by the decision-maker for why the choice was made as it was which should inform review by a supervising court. It is not, as in House v The King (1936) 55 CLR 499, on an appeal from an exercise of a judicial discretion, for the Court to re-exercise the discretion. If a supervising court goes outside the reasons given by a decision-maker for another justification for the exercise of power, that Court might then be seen to be placing itself in the position of the repository of the power and therefore acting impermissibly. Where there are reasons, either the reasons given by the decision-maker demonstrate a justification or they do not. It would, we think, be a rare case where the reasons demonstrate a justification but the ultimate exercise of the power would be seen to be legally unreasonable.
42 The first task, then, is to identify the Tribunal's reasons.
43 The appellant's primary position is that there was only one reason (the Tribunal's concern about the risk that the calls could be intercepted and the privacy of the hearing "breached"), that the primary judge considered it unreasonable, and that the Minister does not seek to uphold it. To sustain that position, however, ground 3 of the notice of appeal must be upheld.
44 For this reason, it is convenient to deal with ground 3 first.
45 The appellant submitted that the phrase "at any rate" in [78] suggests an afterthought or an additional reason added to tie up a loose end and, as such is tied to the previous reasoning and cannot be separated from it. I reject this submission. The phrase is defined in the Macquarie Dictionary as:
a. under any circumstances; in any case; at all events.
b. at least.
46 In the present context it was used as a synonym for "in any case" or "at all events" to provide, as the primary judge held, a separate and independent reason for the Tribunal's decision not to take oral evidence from the witnesses. Although it may appear as a subsidiary reason, I accept the Minister's submission that the finding in relation to the allegedly corroborative evidence was no mere afterthought. The Tribunal gave two separate reasons for the decision.
47 Ground 3 is not made out.
48 The remaining question is whether the second reason provided an intelligible justification for the decision. The determination of this question necessarily involves scrutinising the factual circumstances in which the Tribunal's power was exercised: Singh at [48].
49 The appellant contended that "the fact that the proposed witnesses' evidence is perceived to be inconsistent with documents relied on by the Tribunal" was a reason to take the evidence, rather than a reason not to. His counsel claimed that these people "had evidence that if tested may have resolved the issue of credit". He described them as "alleged eye witnesses to relevant events". He submitted that the decision not to take evidence from them, as alleged eye witnesses to relevant events, because of a prior finding that the appellant could not be believed, lacks an evident and intelligible justification (citing Li at [76]) and to disbelieve their statements without taking oral evidence from them was "unsupportable".
50 There are a number of difficulties with these submissions.
51 First, the Tribunal did not decline to take the evidence because it was perceived to be inconsistent with documents relied on by the Tribunal. It declined to take the evidence because it would not overcome its concerns about the appellant's credit. Those concerns went well beyond the inconsistency between the appellant's account and the documents in question.
52 Secondly, the underlying premise of the submissions is not correct. When close attention is paid to the two statements, the proposition that their authors are "alleged eye witnesses" to "relevant events" is not made out. The "relevant events" are the matters upon which the Tribunal's credibility concerns were based. I have listed those matters at [23] above. Neither of the two individuals purported to be an eye witness to these events. While Mr B said he was a student at the Institute he did not say that he was present at any of the meetings to which he referred or that he personally saw the appellant's name on the list on the noticeboard.
53 Thirdly, it is an over-simplification of the Tribunal's reasons to say that it decided not to take oral evidence from the two witnesses because it disbelieved the appellant. It decided not to take the evidence because it did not consider that their evidence could affect its view of the appellant's credibility. No doubt this was because, on the matters which, in the Tribunal's opinion, undermined the appellant's credibility, their written statements were silent. This is another reason why CZBH is distinguishable: see CZBH at [58].
54 Fourthly, the appellant did not point to any one of the Tribunal's concerns which oral evidence from those witnesses would have been capable of alleviating. Nor did he indicate either to the Tribunal or to the Court what additional evidence they might have been able to give, beyond the vague suggestion that they could have corroborated the appellant's account. The proposition that these people had "evidence that if tested may have resolved the issue of credit" was not made out.
55 As the Minister submitted, a decision as to whether to receive oral evidence will depend, to a significant extent, on the relevance and importance of the evidence. Where on the face of the material before the Tribunal there was no reason to suppose that the authors of the statements could allay its particular concerns about the appellant's credibility, it was not unreasonable to decide not to question them. The Tribunal was not obliged to test their accounts or to give them an opportunity to elaborate upon them before it came to an adverse conclusion about their evidence. Proceedings in the Tribunal are inquisitorial, not adversarial. As the primary judge recognised, the rule in Browne v Dunn does not apply: Re Minister for Immigration; Ex parte Applicant S154/2002 (2003) 201 ALR 437; [2003] HCA 60 at [57].
56 Nevertheless, I am troubled by the Tribunal's conclusion that the statements of the two witnesses were fabricated. It is one thing to find that evidence should not be given any weight. It is quite another to conclude that evidence is a fabrication. The High Court has said in a different context that "as a matter of logic and common sense, something more than mere rejection of a person's evidence is necessary before there can be a positive finding that he or she deliberately lied in the giving of that evidence": Smith v New South Wales Bar Association (1992) 176 CLR 256 at 268 (Brennan, Dawson, Toohey and Gaudron JJ). The Tribunal was entitled to find that the evidence of the two witnesses could not overcome the inconsistencies in the appellant's account. It was unnecessary and inappropriate, however, for the Tribunal to go further and find that their evidence was a fabrication: Smith at 271-2 (Deane J). In the circumstances, that finding was unreasonable. It should not have been made.
57 Having said that, for the reasons I have already given, it was open to the Tribunal to find that what the witnesses had said could not rehabilitate the appellant's evidence. That is what the Tribunal plainly did, in [78] and the first half of [79] of its reasons (extracted above at [26]). Having reached that view, it was not unreasonable for the Tribunal not to call oral evidence from them.
58 Thus, while it might well have been preferable for the Tribunal to have interrogated the two individuals before coming to a concluded view about the appellant's credibility, I am not persuaded that its decision not to do so lacked an evident and intelligible justification. It follows that ground 1 is not made out. As the foundation for the challenge to the primary judge's reasons in ground 2 is that the decision did lack that justification, ground 2 also fails.