Ground 1: Tribunal's decision was based on an irrational finding or a finding for which there was no evidence
11 It is uncontroversial that a core part of the applicant's case as to why there was "another reason" to revoke the cancellation of his visa involved his mental health. That issue was considered by the Tribunal primarily in relation to the risk of the applicant reoffending. However it was also relevant to several of the other factors the Tribunal was required to consider, including the difficulties the applicant would face in Iran if his visa remained cancelled and he was removed from Australia.
12 The Tribunal had before it an expert report from a psychologist, Mr Jeffrey Cummins, who also gave oral evidence before the originally constituted Tribunal. Mr Cummins' evidence was that the applicant had post-traumatic stress disorder and a major depressive disorder. Mr Cummins' report went into considerable detail about the specifics of the applicant's impairment and the nature of the difficulties he would face in Iran as a result of that impairment. Mr Cummins' evidence was consistent with the other expert evidence before the Tribunal, namely two 2017 reports of a clinical neuropsychologist, Ms Laura Anderson, which stated that the applicant presented with many of the clinical features of both PTSD and persistent depressive disorder.
13 However, at [153] of its decision the Tribunal referred to a note in the reports of International Health and Medical Services (IHMS), the health contractors in immigration detention, made by psychiatrist Dr Jillian Spencer. On the basis of the short note it would seem that Dr Spencer had conducted a "Mental Health Screening" of the applicant by videoconference on 29 November 2019. The IHMS note written by Dr Spencer records that the applicant was "[r]eluctant to engage", "[e]nded interview prematurely" and was "[d]ismissive". The final sentence of the IHMS note stated "No evidence of mental illness".
14 The Tribunal characterised that final sentence in the IHMS note as a formal diagnosis that the applicant did not suffer from any mental illness, using it to discount the detailed expert evidence in the reports of Mr Cummins and Ms Anderson of the applicant's mental illness. In effect, and as the applicant submits, the Tribunal treated the short IHMS note from Dr Spencer on the one hand, and the diagnosis and detailed evidence of Mr Cummins and the reports of Ms Anderson which were consistent with Mr Cummins' evidence on the other, as if they were equivalent and cancelled each other out. Referring to the "competing opinions" about the applicant's mental health, the Tribunal concluded at [155]: "Given the competing diagnoses, the Tribunal is not positively satisfied that KQHR has a mental illness."
15 Thus the applicant submits that the characterisation of the IHMS note as a formal diagnosis that the applicant did not suffer from mental illness was irrational and was not open on the evidence: see BZD17 v Minister for Immigration and Border Protection (2018) 263 FCR 292 at 302 [34] (Perram, Perry and O'Callaghan JJ); Minister for Immigration and Citizenship v SZMDS (2010) 240 CLR 611 at 649-650 [135] (Crennan and Bell JJ).
16 The Minister disputes that there was any irrationality and refers generally to the difficulty of showing jurisdictional error on the basis of illogicality or unreasonableness: see Djokovic v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs (2022) 289 FCR 21 at 27-28 [33], citing Minister for Immigration and Border Protection v SZVFW (2018) 264 CLR 541 at 551 [11], 564 [52], and 586 [135]; Minister for Home Affairs v DUA16 (2020) 385 ALR 212 at 220 [26]; SZMDS at 647-650 [130]-[135]; CQG15 v Minister for Immigration and Border Protection (2016) 253 FCR 496 at 517-518 [60]; and Acting Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs v CWY20 (2021) 288 FCR 565 at 598 [142].
17 In particular the Minister contends that it was not irrational for the Tribunal to conclude that it was "not positively satisfied that [the applicant] had a mental illness" as the Tribunal was faced with what it described as competing medical opinions (from Mr Cummins and Ms Anderson, and then from Dr Spencer) as to the applicant's mental health. The Minister submits that whilst the Tribunal was plainly cognisant of the limitations of the IHMS note, it was open to it to place some weight on the note whilst bearing in mind the limitations inherent in it. In light of what the Tribunal said were the competing medical opinions, the Minister submits that the Tribunal's conclusion was not so lacking a rational or logical foundation that its decision was one that no rational or logical decision-maker could reach: see Djokovic at 28 [34]. Nor could it be said to be outside the area of decisional freedom afforded to the Tribunal.
18 I do not accept the Minister's attempted justification of the Tribunal's finding that it was not positively satisfied that the applicant had a mental illness. In all the circumstances the line in the IHMS note that there was no evidence of mental illness cannot sensibly be regarded as a formal diagnosis that the applicant was not suffering from a mental illness. Plainly it was no such thing. The applicant was reluctant to engage with Dr Spencer in the videoconference consultation, he was dismissive, and the interview ended prematurely. As counsel for the Minister properly conceded at the hearing, it was incorrect for the Tribunal to refer to the observations in the IHMS note as a diagnosis. Certainly it was not appropriate to use what was little more than a passing observation in the IHMS note as a basis to discount the substantial reports of Mr Cummins and Ms Anderson attesting to the applicant's mental illness. Dr Spencer's observation was not, on any view, equivalent to the views expressed by Mr Cummins and Ms Anderson, and cannot rationally be regarded as, in effect, cancelling them out.
19 I accept, therefore, that the Tribunal's characterisation of the IHMS note as a formal diagnosis that the applicant did not suffer from mental illness was irrational and not open on the evidence. It lacked a rational or logical foundation in the relevant sense: Djokovic at 28 [34], and was outside the area of decisional freedom afforded to the Tribunal.
20 In these circumstances it is unnecessary to consider the applicant's alternative formulation of the Tribunal's error as a finding of "competing diagnoses" based on no evidence in that it went well beyond the material on which the Tribunal relied: see DNQ18 v Minister for Immigration (2020) 275 FCR 517 at 530 [53].
21 The Tribunal's irrational treatment of the evidence regarding the applicant's mental health was material to its consideration of the reasons given by the applicant as to why the cancellation of his visa should be revoked. Thus the Tribunal's decision is affected by jurisdictional error.