This meant that national governments could not escape what they had agreed to at a European level by enacting conflicting domestic measures, but it also potentially meant that the EEC legislator could legislate unhindered by the restrictions imposed by fundamental rights provisions enshrined in the constitutions of member states.
Det betød, at de nationale regeringer ikke kunne undslippe det de havde aftalt på europæisk plan ved at vedtage modstridende nationale love, men betød potentielt også, at EF kunne lovgive uhindret af de restriktioner vedrørende borgerenes grundlæggende rettigheder, der var nedfældet i medlemsstaternes forfatninger.