[Code of Federal Regulations] [Title 19, Volume 2] [Revised as of April 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 19CFR163.9] [Page 278] TITLE 19--CUSTOMS DUTIES CHAPTER I--BUREAU OF CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) PART 163_RECORDKEEPING--Table of Contents Sec. 163.9 Enforcement of summons. Whenever a person does not comply with a Customs summons, the issuing officer may request the appropriate U.S. attorney to seek an order requiring compliance from the U.S. district court for the district in which the person is found or resides or is doing business. A person who is entitled to notice under Sec. 163.8(a) shall have a right to intervene in any such enforcement proceeding.