of information under paragraph (1) may be required from any State, local, Tribal, or territorial agency or department in any State, or in any territory or other place subject to the jurisdiction of the United States at any designated place of hearing. (b) Service (1) In general A subpoena issued under this section may be served by any person designated in the subpoena as the agent of service. (2) Service of subpoena (A) State, local, Tribal, or territorial agencies and departments Service of a subpoena may be made upon a State, local, Tribal, or territorial agency or department, by delivering the subpoena to an officer, to a managing or general agent, or to any other agent authorized by appointment or by law to receive service of process. (B) Proof of service The affidavit of the person serving the subpoena entered by that person on a true copy thereof shall be sufficient proof of service. (c) Enforcement (1) In general In the case of the contumacy by, or refusal to obey a subpoena issued to, any State, local, Tribal, or territorial agency or department, the Secretary, in coordination with the Attorney General, may invoke the aid of any court of the United States within the jurisdiction of which the investigation described in subsection (a) is being conducted or within the jurisdiction that the subject of such investigation is located, to compel compliance with such subpoena. (2) Order A court of the United States described in paragraph (1) may issue an order requiring the subpoenaed State agency or department, in accordance with such subpoena, to appear, to produce records, or to give testimony relating to the matter under investigation. Any failure to obey the order of the court may be punished by the court as contempt thereof. (3) Service of process Any process under this subsection may be served in any judicial district in which the State, local, Tribal, or territorial agency or department may be found. (d) Nondisclosure requirement (1) In general If the Secretary certifies that otherwise there may result a