Institutional Crisis Erupts at Brazil's Supreme Court Over Bank Master Investigation

A severe institutional crisis has emerged within the Brazilian Supreme Court (STF) following a conflict between Justice André Mendonça and Justice Alexandre de Moraes. The tension began when Justice Mendonça lifted the secrecy of a Federal Police report containing messages between Justice Moraes and Daniel Vorcaro, the former owner of the defunct Banco Master. In these messages, Vorcaro expressed gratitude toward Moraes shortly before his arrest. In response, Justice Moraes requested an investigation into Justice Mendonça for abuse of authority, administrative improbity, and crimes of responsibility, alleging that Mendonça is directing investigations for personal and political reasons.

The conflict extends to other high ranking officials. Justice Mendonça's actions have raised suspicions regarding the roles of Attorney General Paulo Gonet and Federal Police Director General Andrei Rodrigues, who are accused of working with Moraes to hinder the Banco Master probe. STF President Edson Fachin has ordered the involved parties to provide clarifications within five days and has stated that the court's response will be firm and proportional. Justice Cármen Lúcia has indicated her support for a code of conduct for ministers and the end of the Fake News inquiry.

Outlets with center and center left leanings emphasize the institutional instability and the legal battle over the control of the investigation. Center leaning reports highlight the specific accusations of improbity and the internal calls for a code of ethics. Center left coverage focuses on the potential for a prolonged crisis and the strategic struggle between different factions within the judiciary and the police. Left leaning coverage frames the event as part of a broader political week, noting that the dispute is being used as a talking point for presidential candidates and political protests during Independence Day celebrations.

Analysis from center leaning sources suggests the crisis is impacting the 2026 electoral landscape. Supporters of Flávio Bolsonaro are using the crisis to call for the impeachment of Justice Moraes, while government supporters accuse Justice Mendonça of performing selective leaks to benefit the PL party. The conflict has created a war of narratives on social media, with the outcome potentially influencing voter perception of candidates Lula and Flávio Bolsonaro.