Principles
36 In SZLGP v Minister for Immigration & Citizenship [2008] FCA 1198, Gordon J identified jurisdictional error affecting a Tribunal's decision founded on adverse credibility findings. In that case, the then-named Refugee Review Tribunal (RRT) concluded that the visa applicant's claims to be a refugee were fabricated. The appellant in that case had claimed (among other things) that he had helped to arrange the safe passage of his brother and cousin out of China on a fishing boat. That aspect of the claim was rejected because in an earlier statement made in support of the visa application the appellant had not mentioned the name of a village to which he had taken his brother and cousin. Gordon J referred to WAIJ v Minister for Immigration and Multicultural and Indigenous Affairs (2004) 80 ALD 568 in which Lee and Moore JJ said at [21]:
Failure of the tribunal to act 'judicially' will necessarily stamp the review procedure as one which did not accord an applicant practical fairness or justice. To act 'judicially' and according to law the tribunal must carry out its decision-making function rationally and reasonably and not arbitrarily: see Bond at CLR 366-7; ALR 45-6; ALD 30-1 per Deane J. That is to say, the tribunal cannot determine the matter by a 'tossing a coin' or by making a 'snap decision' or by acting on instinct, a 'hunch' or a 'gut-feeling.
37 Gordon J was unable to discern any rational basis for the RRT's conclusion that the initial failure to disclose the name of the village was so important as to go to fundamental aspects of the refugee claims or to undermine the claimant's overall credibility. Her Honour concluded:
25 Notwithstanding the breadth of the Tribunal's discretion to make weight and credibility determinations, the requirement described in WAIJ to make those determinations 'judicially' imposes limits that credibility and weight determinations be made rationally and logically, and be articulated properly. It is worth noting in this context that such requirements are not unique to Australia. Indeed, the United States Court of Appeals for the Ninth Circuit has stated that for a migration Tribunal's adverse credibility finding to survive appellate scrutiny, there must be a 'legitimate articulable basis' for the Tribunal's finding and the Tribunal 'must offer a specific, cogent reason for any stated disbelief': Stoyanov v INS (9th Cir 1999) 172 F3d 731, 736 (internal citations and quotation marks omitted). The Court in Stoyanov went on to state that 'minor inconsistencies cannot support an adverse credibility finding' and that 'trivial errors by an asylum applicant do not constitute a valid ground upon which to base a finding that an asylum applicant is not credible': Stoyanov at 736 (internal citations and quotation marks omitted).
26 Here, the inconsistencies (or rather, omissions) in the first appellant's evidence adverted to by the Tribunal are at most minor or trivial. Further, the Tribunal's reasons disclose no legitimate articulable basis for the finding, based on those omissions, that the first appellant fabricated fundamental aspects of his refugee claims. Instead, the Tribunal, even while acknowledging that it is not to be expected that an applicant will include every detail in the initial application, concludes without reasons that these are details that should have been provided, finds that they are details so weighty or important as to go to fundamental aspects of the claims, makes an adverse credibility finding, and infers that the claims were fabricated. Once the bases for these findings and inferences of fact are tested in the manner outlined, it is apparent that the Tribunal's determination is based on illogical or irrational findings or inferences of fact. It is a decision not supported by reason. To put the matter another way, 'because it is based upon such findings … the determination is an unreasoned decision'.
38 The principles were more recently summarised by Allsop CJ in CWR16 v Minister for Immigration and Border Protection [2018] FCA 859 as follows (at [62]):
The fact that a finding by the Tribunal is on a matter of credit does not 'shield its decision-making processes from scrutiny': SZSHV v Minister for Immigration and Border Protection [2014] FCA 253 at [31]. As Flick J wrote later in that paragraph, credit findings, 'like all findings, must be rationally made and based upon facts having logical and probative weight'. Determinations on credibility and weight must 'be made rationally and logically, and be articulated properly' and minor inconsistencies and trivial errors in an applicant's account cannot be used to find that an applicant is not credible: SZLGP v Minister for Immigration and Citizenship [2008] FCA 1198 at [25] per Gordon J. Where the Tribunal goes on to use such minor inconsistencies or omissions to make an adverse credibility finding and conclude that an applicant's claims are concocted, without disclosing a legitimate articulable basis for the finding, then it may become apparent that a decision is based on illogical or irrational findings or inferences: SZLGP at [26].
39 In MZZJO, the Full Court dismissed an appeal in which adverse credibility findings of the RRT were subject to challenge. The Court concluded that the primary judge had not erred in finding no jurisdictional error in circumstances where the RRT had relied on omissions in an arrival interview, among other things, to reject the appellant's claims. However, in obiter, the Court said:
56 On the latter issue, some caution should be exercised by decision-makers in relation to omissions by applicants of matters at entry interview. They are conducted shortly after a person has arrived in Australia; in the case of the appellant, after a long journey on the ocean in cramped and difficult conditions. On the evidence, a significant part of the entry interview content concerns questions designed to elicit information about so-called 'people smuggling'. They are the first substantive and formal engagement with Australian officials by people who come, as the appellant does, from regimes where authority figures may be viewed with some fear and mistrust. A person is asked to articulate personal matters of family and individual history not only to a strange official, but also to an interpreter who is a stranger, without the assistance and support of a lawyer or migration agent. It is unlikely many interviewees appreciate the use to which the information they give might be put, notwithstanding the script which is read to them. The interviewees are being asked to digest a lot of information quickly and in circumstances they may perceive as hostile.
57 Had the Tribunal relied only on a failure to mention details at the entry interview, we may have been inclined to see this as involving a misunderstanding of its task on review. However, the Tribunal relied on inconsistencies arising from information presented by the appellant after the entry interview as well, including inconsistencies between the delegate interview and what he said to the Tribunal, and the somewhat inexplicable reluctance of the appellant to have his childhood friend, who arrived on the same boat, give evidence to corroborate aspects of his account. We consider its approach was open to it as a merits decision-maker, and the Federal Circuit Court was correct to so find.