Aguiar, Osmar de Oliveira(Câmara dos Deputados, Centro de Formação, Treinamento e Aperfeiçoamento, 2012)
chamado "poder de investigação próprio das autoridades judiciais", conferido pela Constituição Federal às CPIs, para se avaliar como as limitações formais e materiais aos poderes desses colegiados têm como objetivo garantir a defesa dos direitos... This article examines the concept of Parliamentary Commissions of Inquiry- CPIs in the Legislative Power and the limitation of their powers under the legislation, doctrine and jurisprudence in Brazil. For this, we study of the legislation, doctrine and jurisprudence about the "power of judicial investigation itself, " conferred by the Constitution to Congressional investigations, to assess how the procedural and substantive limitations on the powers of these boards are intended to safeguard the rights fundamental rights of citizens. Thus, the powers of CPIs are restricted to the field of inquiry evidence, in line with the tasks of each power and respect for individual liberties....