In the Citizenship Act, 1955 (hereinafter referred to as the principal Act), in section 2, in sub-section (1), in clause (b), the following proviso shall be inserted, namely:—

   "Provided that any person belonging to Hindu, Sikh, Buddhist, Jain, Parsi or Christian community from Afghanistan, Bangladesh or Pakistan, who entered into India on or before the 31st day of December, 2014 and who has been exempted by the Central Government by or under clause (c) of sub-section (2) of section 3 of the Passport (Entry into India) Act, 1920 or from the application of the provisions of the Foreigners Act, 1946 or any rule or order made thereunder, shall not be treated as illegal migrant for the purposes of this Act;".