Minister Alexandre de Moraes of the Supreme Federal Court suspended the Dosimetry Law on May 9, 2026 [1].
The suspension halts a legislative measure that has sparked a high-level conflict between Brazil's top legal bodies. The decision leaves the law in limbo until the Supreme Federal Court can fully analyze whether the measure violates the constitution.
The legal battle centers on a divide between the Advocacia-Geral da União (AGU) and the Procuradoria-Geral da República (PGR). The AGU said the law is constitutional and requested that the court maintain it [2]. Conversely, the PGR said the law contains constitutional flaws and sought its suspension [2].
This conflict follows a turbulent legislative path. President Luiz Inácio Lula da Silva issued a full veto of the law in 2024 [2]. However, Congress overturned that veto in 2025, allowing the law to be promulgated [1].
The move to suspend the law was triggered by a request from the Rede Sustentabilidade party caucus [2]. Minister Moraes said he demanded explanations from President Lula and Senate President Davi Alcolumbre regarding the matter [1].
The court is currently awaiting a formal opinion from the PGR to proceed with the final analysis [3]. Until the court reaches a definitive ruling, the provisions of the Dosimetry Law remain inactive.
“Minister Alexandre de Moraes suspended the Dosimetry Law on May 9, 2026.”
The suspension reflects a significant tension between the executive and legislative branches and the judiciary in Brazil. By overturning a presidential veto and then facing a judicial suspension, the Dosimetry Law has become a focal point for the struggle over constitutional interpretation and the limits of congressional power versus judicial oversight.
