Institutional Crisis Grips Brazil’s Supreme Court as Justices Feud Over Banker Scandal

An unprecedented institutional crisis is underway at Brazil’s highest court, the Supreme Federal Tribunal (STF), centered on a furious public feud between two of its most politically exposed justices, Alexandre de Moraes and André Mendonça. The conflict involves serious allegations of abuse of authority linked to an investigation into a major financial scandal.

The dispute revolves around Daniel Vorcaro, the jailed former head of the mid-sized Brazilian lender Banco Master, and has seen the two justices trade accusations in open court and in formal filings. The crisis was sparked by a police report unsealed by Justice Mendonça, which contains messages and documents suggesting a relationship between Vorcaro and Justice de Moraes.

The unsealed material also brings attention to a contract reportedly worth R$130 million (approximately $25 million) between the bank and the law firm of Justice de Moraes’s wife. Justice de Moraes has vehemently denied any wrongdoing, calling the purported dialogues "fantasiosos" and the allegations a "farsa incriminatória".

The conflict pits Mendonça, a conservative justice appointed by former President Jair Bolsonaro, against de Moraes, who has been a central figure in the institutional resistance against the former president, notably overseeing the case that resulted in the elder Bolsonaro’s conviction for an attempted coup. Mendonça is accused by his rival of deliberately directing the investigation to create a politically motivated case.

Justice de Moraes, in turn, has demanded an investigation into Mendonça, accusing him of selectively leaking documents and acting in the service of a political group that "tried to launch a coup in this country", a clear reference to the Bolsonaro faction. The investigation against Vorcaro has also ensnared political figures; Mendonça authorized a separate inquiry into Senator Flávio Bolsonaro, the son of the former president, regarding his ties to Vorcaro and the financing for a film about his father.

The public feud escalated during a recent court session where the judges debated whether to authorize an investigation into de Moraes based on the police report. The court was forced to suspend its session on the matter after a request for review, effectively delaying the decision on whether to investigate a sitting justice. This procedural maneuver ensures that the institutional uncertainty surrounding the Supreme Court’s internal stability will continue as the underlying criminal investigations proceed.

What it touches

The institutional instability generated by the Supreme Court’s highly public internal conflict adds a new layer of political uncertainty and perceived country risk premium to the Brazilian economy. The ongoing feud and the delay in resolving the investigative matter increase the volatility risk for Brazilian traded assets, particularly the country's currency and sovereign bonds, as judicial stability is a key factor for foreign investors.