[Code of Federal Regulations]
[Title 19, Volume 1]
[Revised as of April 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 19CFR123.29]

[Page 605]
 
                        TITLE 19--CUSTOMS DUTIES
 
  CHAPTER I--UNITED STATES CUSTOMS SERVICE, DEPARTMENT OF THE TREASURY
 
PART 123--CUSTOMS RELATIONS WITH CANADA AND MEXICO--Table of Contents
 
        Subpart C--Shipments in Transit Through Canada or Mexico
 
Sec. 123.29  Procedure on arrival at port of reentry.

    (a) Presentation of documents. At the first port in the United 
States after transportation through Canada or Mexico under the 
provisions of this subpart, the carrier shall present to Customs the in-
transit manifest or manifests for each loaded conveyance. For mixed 
ladings, that is, ladings made up of several shipments, the waybills 
shall be available at the port of return or discharge for use by Customs 
officers. For a railroad train for which a consolidated manifest was not 
used the conductor shall also present a train sheet showing the car 
numbers and initials.
    (b) Vessels and rail shipments continuing in-transit movement--(1) 
Vessels. In the case of a vessel carrying in-transit merchandise, the 
master's copies of the in-transit or in-bond manifest covering the 
merchandise given final Customs release at that port shall be retained 
by Customs at that port and the manifests covering merchandise to be 
discharged at subsequent ports of arrival shall be returned to the 
master of the vessel for presentation to Customs at the next port.
    (2) Rail shipments. An in-transit rail shipment arriving at an 
intermediate port of reentry or exit intended for further in-transit 
movement through Canada may be permitted to go forward under the 
accompanying in-transit manifest after verification by Customs that the 
manifest satisfactorily identifies the shipment.
    (c) Checking and breaking of seals--(1) Checking seals. The Customs 
officer at the port of arrival shall check customs seals applied to the 
conveyance or compartment for unlocked or missing seals. Where the seals 
are unlocked or missing, the merchandise shall be treated as having been 
imported from the transited country.
    (2) Breaking seals. In-bond seals shall be broken only by a Customs 
officer or by a person acting under the direction of a Customs officer. 
In-transit seals may be broken by any carrier's employee, or by a 
consignee at any time or place after the merchandise under such seals 
has been released by Customs.
    (d) Proper manifest. In-transit merchandise shall not be released 
until proper in-transit manifests are received except that it may be 
treated as imported merchandise.
    (e) Substitution of merchandise. Any instance of substitution of 
merchandise shall be reported to the Commissioner of Customs, and the 
merchandise shall be detained.

[[Page 606]]