The dilemma on the bicameralism or unicameralism of the EC/EU legislator has existed for a long time. Not a few times, given the name of Parliament, operating with relative similarities regarding the states as subjects of international law, it was considered that it was and remained the legislature of the EC/EU. Over time, primary law and practice were likely to clarify things. Thus, at the beginnings of the Community construction, the Council acted as genuine supreme legislator, which had been gradually joined, as an institution of political control, consultation, cooperation and co-decision, by the European Parliament, so that currently the two institutions are equally involved in the legislative process of a two-chamber system.