19 C.F.R. § 144.14
Removal to warehouse
When the entry summary, Customs Form 7501, or its electronic equivalent and the bond on Customs Form 301, containing the bond conditions set forth in § 113.62 of this chapter have been filed, the merchandise shall be sent to the bonded warehouse, except for:
(a) Merchandise for which an immediate withdrawal if filed, or
(b) Packages designated for examination elsewhere than at the warehouse, which shall be sent to the warehouse after examination.