(5) Every regulation made by the Minister under subsection (1) shall be laid before each House of the Oireachtas as soon as may be after it is made and, if a resolution annulling the regulation is passed by either such House within 21 days of the day on which that House has sat after the regulation is laid before it, the regulations shall be annulled accordingly, but without prejudice to the validity of anything previously done under them.".