Act to amend the provisions of the Aliens Act, 1937, so as to prohibit the performance of certain acts in co-operation with or in respect of certain aliens; so as to provide for the issuing of temporary permits to certain persons; and so as to provide for the imposition of certain penalties on second or subsequent convictions of offences under that Act; to amend the provisions of the Admission of Persons to the Republic Regulation Act, 1972, so as to provide for the exemption of certain categories of persons from the provisions of section 13 (1) (a) of the latter Act; to amend section 43 of the latter Act so as to substitute a reference to section 51 for a reference to section 52; and so as to apply the provisions of section 13 (1) of the latter Act in respect of certain persons convicted in any country of certain offences; and to provide for incidental matters.