Mendonça Promises Impartial Oversight of Banco Master and INSS Inquiries

Overview

• In his first major public interview as an STF minister on Friday, Aug. 14, 2026, André Mendonça said he will keep an impartial stance and decide the Banco Master and INSS cases on technical evidence and constitutional guarantees.
• Mendonça identified the probe tied to former banker Daniel Vorcaro as especially emblematic of the larger corruption work and said there are specific “points of attention” about how investigatory institutions are functioning that he must supervise.
• He stressed the need for full due process, including adversarial proceedings and broad defense, while insisting investigations must still identify and hold accountable those responsible for alleged multibillion‑reais frauds.
• The minister warned against politicizing the cases, saying corruption has no party color, and called for judicial self‑restraint, stronger compliance tools, and clearer conduct rules for magistrates.
• Mendonça backed President Edson Fachin’s proposal for a formal STF code of ethics but acknowledged internal resistance and signaled the reform and wider judicial modernization work may advance only after further court talks and political timing are resolved.