8 December 1997, the government submitted the ratification bill
to the Council of State, who decided on 12 May 1998 that the Amsterdam
Treaty was not in conflict with any of the articles of the constitution
and therefore an amendment of the constitution not to be required
(Doc. Parl. No. 4381). The Council referred to Art. 49bis and argued
that the treaty implied a transfer of national sovereignty to an
international institution. The required 2/3 majority was obtained
on 9 July (55 in favor, 4 abstentions).