Under Rule 3(2), until such time as his credentials had been verified or a ruling had been given on any dispute, and provided that he had previously made a written declaration stating that he did not hold any office incompatible with that of Member of the European Parliament, Cornelis Visser would take his seat in Parliament and on its bodies and would enjoy all the rights attaching thereto.
Saskaņā ar Reglamenta 3.panta 2.punktu, kamēr Cornelis Visser pilnvaras nav pārbaudītas vai kamēr nav pieņemts lēmums par strīdīgu jautājumu, viņš pilntiesīgi darbojas Parlamentā un tā struktūrvienībās ar noteikumu, ka pirms tam ir iesniedzis rakstisku deklarāciju, kurā apliecina, ka neieņem ar deputāta mandātu nesavienojamu amatu.