"In exercise of the powers conferred by Section 16 of the Citizenship Act 1955, the central government, being of the opinion that it is necessary and expedient in public interest to do so, hereby delegates the power vested with the central government to register the birth of children even after expiry of one year of its occurrence under Section 4 of this Act to the Head of Indian Missions abroad," said G K Dwivedi, Joint Secretary in the Home Ministry, in an order.