For the efficient administration of the functions vested in the registrar by this chapter, he may require, by subpoena issued by him or under his direction, (1) the attendance of any witness and the production of any book, paper, document, or other evidence from any place in China at any designated place of hearing in China, or, if the witness is actually resident or temporarily sojourning outside of China, at any designated place of hearing within fifty miles of the actual residence or place of sojourn of such witness, and (2) the taking of a deposition before any designated person having power to administer oaths. In the case of a deposition, the testimony shall be reduced to writing by the person taking the deposition or under his direction, and shall then be subscribed by the deponent. The registrar, or any officer, employee, or agent of the United States authorized in writing by him, may administer oaths and examine any witness. Any witness summoned or whose deposition is taken under this section shall be paid the same fees and mileage as are paid witnesses in the courts of the United States.

In the case of failure to comply with any subpoena or in the case of the contumacy of any witness before the registrar or any individual so authorized by him, the registrar or such individual may invoke the aid of any Federal district court. Such court may thereupon order the witness to comply with the requirements of such subpoena and to give evidence touching the matter in question. Any failure to obey such order may be punished by such court as a contempt thereof.

For the efficient administration of the functions vested in the registrar by this chapter, he, or any officer, employee, or agent of the United States authorized in writing by him, shall at all reasonable times, for the purpose of examination, have access to and the right to copy any book, account, record, paper, or correspondence relating to the business or affairs of a China Trade Act corporation. Any person who upon demand refuses the registrar, or any duly authorized officer, employee, or agent, such access or opportunity to copy, or hinders, obstructs, or resists him in the exercise of such right, shall be liable to a penalty of not more than $5,000 for each such offense. Such penalty shall be recoverable in a civil suit brought in the name of the United States.