Bill 2903/2023 is set to be voted in coming days by the Senate. The bill – approved on May 30 by the Brazilian Chamber of Deputies – seeks to make profound changes in the demarcation process of indigenous lands, and legitimize the “Temporal Landmark thesis”, whereby Indigenous peoples would only have the right to claim territories that were in their possession when the Federal Constitution was adopted in 1988. The content of this bill impacts the rights of Indigenous peoples, particularly regarding the right to self-determination and traditional territory and reinforces the systemic human rights violations suffered by Indigenous peoples in Brazil who for centuries have been expelled from their territories. Amnesty International calls on the Senate to immediately reject this bill.