Abstract: The European legislator, being supported in that regard by the Court of Justice, confers upon national regulatory authorities (NRAs) the exercise of the most important tasks concerned with the regulation of the network-bound sectors, while at the same time guarantees NRAs a far-reaching independence in exercising of their discretionary powers and shielding NRAs against other public authorities, including national parliaments. This, in turn, raises many doubts from the perspective of some essential constitutional principles of the Member States, such as, among others, ''the domain of the law,'' which reserves the regulation of issues sensitive to the citizens as an exclusive parliament's prerogative. It is submitted in this article that national parliaments should play a much more active role in regulating the network-bound sectors. The main point is to strengthen the protection of fundamental rights of regulated parties and create the real democratic legitimisation of NRAs, while not undermining those regulatory objectives that are already accorded at the EU level.