19 C.F.R. § 146.51 Customs control of merchandise.
Title 19 - Customs Duties
No merchandise, other than domestic status merchandise provided for in §146.43, will be manipulated, manufactured, exhibited, destroyed, or transferred from a zone in any manner or for any purpose, except under Customs permit as provided for in this part. The port director may require segregation of any zone status merchandise whenever necessary to protect the revenue or properly administer U.S. laws or regulations.
Title 19: Customs Duties
PART 146—FOREIGN TRADE ZONES
Subpart E—Handling of Merchandise in a Zone
§ 146.51 Customs control of merchandise.

