Am 26. März 1957 begrüßt die belgische Tageszeitung Le Soir die Unterzeichnung der Römischen Verträge und die Geste der Außenminister der Sechs.

In an article published in the Belgian communist daily newspaper Le Drapeau rouge on 27 March 1957, economist Pierre Joye criticises the European Economic Community (EEC), which he believes symbolises the alliance of big business against European workers.

On 26 November 1957, during the parliamentary debates in the Belgian Senate, Fernand Dehousse, a Socialist Senator from Liège and a fervent European federalist, sets out in detail why he is in favour of the Senate’s ratifying the Treaties establishing the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom).