Dunsmir- Pre Vavilov Vavilov Framework complex framework for selecting the standard of review based on a presumption of expertise and featuring the weighing of several contextual factors. A general presumption of reasonableness review for all administrative decisions gives way to statutorily prescribed standards of review or, where a statutory right of appeal is present, to appellate standards. Simpler rule-based approach Rule of law requires correctness review: I. where an administrative decision raises a constitutional question or II. a general question of central importance to the legal system as a whole or III. requires the court to establish jurisdictional boundaries between administrative bodies. What no longer applies: a) “true questions of jurisdiction” requiring review on a correctness standard; b) the expertise of an administrative decision-maker relative to the reviewing court; c) the presence of a statutory privative clause limiting judicial intervention play any role in the selection of the standard of review. Contextual factors: a) the reviewing court’s assessment of the decision-maker’s relative expertise with respect to the question at issue based on a contextual analysis of the statutorily mandated qualifications of the decision-maker’s members, b) their experience in a particular area, and c) their involvement in policy-making. d) decision-makers’ proximity and responsiveness to stakeholders, e) their ability to render decisions promptly, flexibly, and efficiently, f) and their ability to provide simplified and streamlined proceedings that support access to justice. Broadly: a) focused on the presence of a privative clause or right of appeal, b) the decision-maker’s relative expertise and its nexus to the question, c) the purpose of the provision and statute at issue, and the nature of the question. Why a general presumption of reasonableness makes sense: Purpose of the legislatureto delegate certain matters to non-judicial decision-makers through statute. Because “the very fact that the legislature has chosen to delegate authority” justifies a presumption of reasonableness review, it is no longer necessary for reviewing courts to evaluate whether other rationales for deference to administrative decision-making apply to the decision under review. e.g Parliament intended reviewing courts to defer to visa officers’ decisions on questions of law, including the interpretation of their home statute? Vavilov: a presumption of reasonableness review can be rebutted by strong and compelling signals from the legislature that it intends for a different standard to apply Expressly prescribed standards of review in statutes Implicitly prescribed appellate standard of review-statutory appeal mechanism from ADM to court