A significant move to enhance judicial scrutiny emerged from the Federal Senate as Senator Alessandro Vieira (MDB-SE) officially requested the establishment of a Parliamentary Commission of Inquiry (CPI). The proposed commission aims to thoroughly investigate the conduct of Supreme Federal Court (STF) justices Dias Toffoli and Alexandre de Moraes.
The core of the investigation focuses on their alleged involvement in the high-profile case surrounding Banco Master. Vieira’s initiative seeks to uncover any potential “personal, financial, or other relationships” that might exist between the two prominent magistrates and banker Daniel Vorcaro, a central figure in the ongoing controversy.
Furthermore, the requerimento, filed on March 6, 2026, specifically calls for an examination into the “possible repercussions of these relationships on the functional conduct of the aforementioned magistrates,” underscoring concerns about judicial independence and impartiality.
Scope and Allegations Driving the Inquiry
The proposed CPI is designed to provide a deep dive into the interactions and decisions related to the Banco Master case. Senator Vieira, who currently serves as the rapporteur for the Organized Crime CPI, emphasized that the objective is to ensure equitable application of the law, asserting that all individuals, regardless of their position, must adhere to the same legal standards.
The senator highlighted the necessity of reinforcing foundational principles of the Judiciary, such as independence and impartiality. He stressed the importance of proceeding responsibly and without prejudgment, stating, “Without prior condemnations and with responsibility, it is necessary to ensure that everyone is subject to the same law.”
The allegations center on potential undue influence or conflicts of interest stemming from interactions with Vorcaro. The investigation would delve into specific judicial actions and decisions made by Justices Toffoli and Moraes that intersect with the banker’s interests or the operations of Banco Master.
Key areas of inquiry for the CPI would include:
- Any documented or indirect communication channels between the justices and Daniel Vorcaro.
- Financial transactions or personal dealings that could suggest a conflict of interest.
- Judicial decisions made by the justices in cases directly or indirectly involving Banco Master or Vorcaro.
- Adherence to ethical guidelines and codes of conduct for Supreme Court magistrates.
Pathway to Congressional Investigation
For the proposed CPI to be formally installed, it must first secure substantial support within the Senate. The requerimento requires the signatures of at least one-third of the senators, which translates to a minimum of 27 parliamentary endorsements. This initial hurdle reflects the gravity and political weight associated with investigating members of the highest judicial body in the nation.
Once the requisite signatures are gathered, the document will then proceed to the office of the Senate President, Davi Alcolumbre (União Brasil-AP). It will be Alcolumbre’s responsibility to evaluate the procedural requirements and eventually greenlight the formal creation and establishment of the commission. This process ensures a robust legislative oversight mechanism for matters of public interest.
Justices Issue Denials Amidst Scrutiny
Both Justice Alexandre de Moraes and Justice Dias Toffoli have issued public statements refuting the allegations and clarifying their positions regarding the Banco Master case and their interactions with Daniel Vorcaro. These pronouncements came as the legislative pressure mounted for a formal inquiry.
Justice Moraes, through his Supreme Court press office, released a note asserting that a technical analysis of Vorcaro’s telematics data revealed no messages directed to the minister. The statement specifically mentioned that “single-view messages sent by him [Vorcaro] on November 17, 2025, do not match Minister Alexandre de Moraes’ contacts in the seized files.”
The communication further clarified that “prints of these messages sent by Vorcaro are linked to folders of other individuals on his contact list and are not listed as directed to Minister Alexandre de Moraes.” This aims to dispel any notion of direct communication or illicit contact between the banker and the justice.
Toffoli’s Defense and Judicial Process
Similarly, Justice Dias Toffoli’s office provided a comprehensive account of his judicial actions in cases related to the “Compliance Zero” operation, which is intrinsically linked to the broader Master case. Toffoli stated that he was designated as the rapporteur for these processes through the standard randomized lottery system within the Supreme Court, ensuring an impartial assignment.
His statement affirmed that he authorized all necessary diligences requested by the investigating authorities, including the Federal Police and the Prosecutor General’s Office. Toffoli highlighted his consistent approval of measures throughout the case’s handling, emphasizing that he “deferred all measures required by the Federal Police and the Prosecutor General’s Office,” ensuring the investigations proceeded without hindrance.
The justice’s office concluded that “the investigations continued to be carried out normally and regularly, without prejudice to the ascertainment of the facts.” This indicates that, from his perspective, all judicial procedures were followed meticulously, upholding the integrity of the investigative process and his functional conduct.
