A large majority of political group leaders warned that any Treaty change would need to be carried out in a manner which included both national parliaments and the European Parliament.
Vairums Eiropas Parlamenta politisko grupu līderu brīdināja, ka jebkuras izmaiņas ES līgumā jāveic atklātā veidā, iesaistot gan valstu parlamentus, gan Eiropas Parlamentu.