Abstract Between 2015 and 2017, a Parliamentary Commission of Inquiry (PCI) took place in the Câmara dos Deputados (Brazil’s lower house) of the Brazilian National Congress, which investigated the formerly named National Indian Foundation (FUNAI) and the National Institute for Colonisation and Agrarian Reform (INCRA) in their attributions of demarcating lands, Indigenous and Quilombola lands, respectively. This PCI was established by the Ruralista caucus, a group that represents the interests of agribusiness inside Congress. One of the focuses of the PCI was to discuss the role of anthropology in the demarcation processes of Indigenous and Quilombola lands, questioning not only the work of anthropologists, but the field of knowledge itself. Through an ethnography of documents (shorthand notes of the meetings and reports presented) and by direct observation, the research that culminated in this article sought to reflect on the anthropological practice related to public policies for the redistribution of land to Indigenous peoples and Quilombola communities and their friction with agribusiness interests. The centrality of the agrarian agenda and the model of territorial development defended by agribusiness clashes with public policies for the democratisation of access to land. The FUNAI-INCRA PCI reveals yet another articulated attempt by agribusiness to establish new benchmarks for these public policies, through the Ruralista caucus, and for this reason anthropology was included in the debate.