3Requirement of passport or other travel document and visa.

(1) No person proceeding from any place outside India shall enter, or attempt to enter, India by air, water or land unless he is in possession of a valid passport or other travel document, and in case of a foreigner, also a valid visa, and any foreigner while present in India shall also be required to possess valid passport or other valid travel document and valid visa, unless exempted under section 33 or through intergovernmental agreements:
Provided that notwithstanding anything contained in this sub-section, no foreigner shall be allowed to enter into or stay in India, if he is found inadmissible to do so on account of threat to national security, sovereignty and integrity of India, relations with a foreign State or public health or on such other grounds as the Central Government may, specify in this behalf:
Provided further that the decision of the Immigration Officer in this regard shall be final and binding.
(2) Notwithstanding anything contained in section 3 of the Passports Act, 1967 (15 of 1967), no person shall depart or attempt to depart from India by air, water or land unless he is in possession of a valid passport or other travel document and in case of a foreigner, also a valid visa:
Provided that notwithstanding anything contained in this sub-section, no person shall be allowed to depart or exit from India, if his presence is required in India by any authorised agency or on such grounds as the Central Government may, by order, specify in this behalf:
Provided further that the decision of the Immigration Officer in this regard shall be final and binding.
(3) The Immigration Officer may examine the passport or other travel document and visa of a foreigner during his entry into, transit through, stay in, movement within India and also require him to furnish such information as may be necessary and appropriate.
(4) The Immigration Officer may seize a passport or other travel document of any person which has been declared as lost or stolen or considered as damaged or forged or fraudulently obtained or on the direction of the passport issuing authority or courts.
(5) The overall supervision, direction and control on visa and related matters shall vest in and be exercised by the Central Government.