The present Commission was established by the Treaty of Rome in 1957; it also replaced the High Authority and the Commission of Euratom in 1967. The Commission's first president was Walter Hallstein (see Hallstein Commission) who started consolidating European law and began to impact on national legislation. National governments at first took little heed of his administration, with the president having to stamp the Commission's authority early on. With the aid of the European Court of Justice, the Commission began to be taken more seriously.