A legislative investigation
A parliamentary commission of inquiry, known in Brazil as a CPI, is a temporary investigation conducted by the Legislative Branch into a specific matter of public interest. The parliamentary house that creates the commission organizes lawmakers to hear testimony and obtain information directly as part of its oversight role.
In Brazil, the 1988 Constitution provides for CPIs in Article 58, paragraph 3, and Law No. 1,579 of 1952 addresses their regulation. A commission must investigate a defined matter; it is not a general authorization to investigate any subject without limits or connection to the stated scope.
Powers and limits
During an inquiry, a CPI can summon people to testify, request documents, and hold hearings. The available evidence describes its investigative powers as comparable to those of judicial authorities for investigative purposes. That does not make the commission a court or allow it to replace a judge’s decision. Its actions remain subject to constitutional limits and judicial review where an overreach or rights violation is alleged.
CPIs operate for a limited period, although their time frame may be extended. At the end, the commission issues a report. The report is not a binding judicial ruling: it can present findings and information and refer them to the relevant authorities, which decide whether further action is warranted.
What a CPI can—and cannot—do
In practice, a CPI is a legislative oversight tool for investigating defined facts. It can gather testimony and information and identify matters that may call for subsequent action, but it does not convict people or replace the institutions responsible for investigating or judging crimes.
The name of the mechanism also depends on the level of government. According to the supplied information, at the municipal level the correct designation is Special Inquiry Commission, or CEI, rather than CPI. In either case, the central function is to investigate and report: the commission performs parliamentary oversight, while any later measures depend on the authorities empowered to take them.