In this article, I discuss the ways in which the Inter-American Court of Human Rights (IACtHR) may address cases adopting a novel approach to legal adjudication—one that relies on domestic notions of constitutional law carried out by domestic jurisdictions. Most scholarship on the inter-American human rights system assumes a top-down approach, whereby the Court dictates what countries must do. I offer an alternative, bottom-up, approach that could advance the Court’s legitimacy, especially in the face of criticism by countries, legal scholars and advocates for the Court’s decisions as an illegitimate intervention into domestic affairs. To this end, I examine the conventionality control doctrine, whereby domestic judges are expected to decide as if they were “inter-American human rights judges,” and I discuss two decisions that shed light on the IACtHR’s bottom-up model of constitutional dialogue with domestic jurisdictions.