3. Every regulation made under this Act or order made under section 5 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 or order is passed by either such House within the next 21 days on which that House sits after the regulation or order is laid before it, the regulation or order is annulled, but without prejudice to the validity of anything previously done under it.