Labour Party MP Ahmed Marcouch wants to bar imam Mohamed al-Maghraoui from entering the Netherlands.
The controversial Moroccan imam has been invited to attend a conference in the As Sunnah mosque in The Hague.
Al Maghraoui caused an uproar in Morocco in 2008 when he issued a fatwa approving a marriage with a nine-year-old girl. The fatwa has since been nullified by the Moroccan religious authorities and the controversial imam fled to Saudi Arabia to avoid prosecution. He reportedly repeated his fatwa when he returned to Morocco in 2011.