A month later the Communications Act of 1934 was amended to enable the President during time of war or threat of war to regulate or close any or all facilities or stations for wire communication within the jurisdiction of the United States.[496] Nearly ten years later this power was extended to any or all stations or devices capable of emitting electromagnetic radiations within the jurisdiction of the United States.[497] The power to close stations for radio communication within the jurisdiction of the United States included those suitable as navigational aids beyond five miles of the United States.[498] ACQUISITION OF INFORMATION BY THE GOVERNMENT Examined herein are statutes requiring private persons or groups to report their activities to government agencies, or compelling them to testify before such agencies; and providing for the conduct or study of experiments by government agencies, including congressional committees, for the purpose of obtaining certain information. Other measures provide for a variety of investigations, inventories, audits, etc., to be conducted by government agencies and congressional committees, and intelligence. _Compulsory Reporting_:[499] Compulsory reporting on an occasional or periodic basis, it is generally assumed, constitutes an effective enforcement device. Thus to aid the President in effectively exercising the powers granted therein, the Bank Conservation Act of 1933[500] provided that he might require specific, detailed, and confidential information to be given under oath by any person then engaged in the banking business. The President could require the production of private papers, letters, contracts, books of account or other papers in the custody of the person required to produce them. Not until a very detailed and thorough examination of the information sought had been completed, could an accurate report be prepared in compliance with the Act.[501] The National Industrial Recovery Act permitted the President to impose such conditions (including requirements for the making of reports, the keeping of records and the keeping of accounts) for the protection of consumers, competitors, employees, and others, and in furtherance of the public interest as he saw fit, as a condition of approval of codes of fair competition.[502] Another section of the Act required trade or industrial associations, if they were to receive the benefit of exemption from antitrust prosecution, to file a statement with the President in accordance with regulations promulgated by the Chief Executive.[503] The Securities Exchange Act of 1934 similarly required periodical reporting[504] as did the 1935 enactment directed at preventing the interstate shipment of contraband oil.[505]