Section 1. Short title, extent and commencement

CHAPTER I PRELIMINARY 1. Short title, extent and commencement .—This Act may be called the Illegal Migrants (Determination by Tribunals) Act, 1983. (2) It extends to the whole of India. (3) It shall be deemed to have come into force in the State of Assam on the 15th day of October, 1983 and in any other State on such date as the Central Government may, by notification in the Official Gazeette, appoint and different dates may be appointed for different States and references in this Act to the commencement of this Act shall be construed in relation to any State as references to the date of commencement of this Act in such State. 2. Application .—Nothing in this Act shall apply to or in relation to— (a) any person who was in any State and who had been expelled from that State or India before the commencement of this Act in that State or in relation to whose expulsion from such State or India any order made before such commencement under any other law is in force; (b) any person detected as a foreigner at the time of his entry across any border of India; (c) any foreigner who, having entered into India under a valid passport or travel document, continued to remain therein after the expiry of the period for which he was authorised to remain in India under such passport or travel document.