Brazil’s Supreme Federal Court (STF) is facing its most severe institutional crisis in years, driven by explosive corruption allegations against a sitting justice and a public push by the court’s President to end a long-running, controversial inquiry into the spread of disinformation. The core of the tension is focused on Justice **Alexandre de Moraes**, the country’s most powerful and polarizing judge, who is under intense scrutiny following the unsealing of police documents that suggest a close relationship with an arrested banker at the center of a major financial fraud scandal. The uncertainty surrounding the integrity and stability of the **Brazil Supreme Court** injects significant institutional risk into the country’s political landscape.