(a) In-bond shipments from Canada. (1) Swine from Canada transported in-bond through the United States for immediate export shall be inspected at the border port of entry and, when accompanied by an import permit obtained under § 93.504 of this part and all conditions therein are observed, shall be allowed entry into the United States and shall be otherwise handled as provided in paragraph (b) of § 93.501. Swine not accompanied by a permit shall meet the requirements of this part in the same manner as swine destined for importation into the United States, except that the Administrator may permit their inspection at some other point when he or she finds that such action will not increase the risk that communicable diseases of livestock and poultry will be disseminated to the livestock or poultry of the United States.

(2) In-transit shipments through Canada. Swine originating in the United States and transported directly through Canada may re-enter the United States without Canadian health or test certificates when accompanied by copies of the United States export health certificates properly issued and endorsed in accordance with regulations in part 91 of this chapter: Provided, That, to qualify for entry, the date, time, port of entry, and signature of the Canadian Port Veterinarian that inspected the swine for entry into Canada shall be recorded on the United States health certificate, or a document containing the information shall be included with the certificate that accompanies the swine. In all cases it shall be determined by the veterinary inspector at the United States port of entry that the swine are the identical swine covered by said certificate.

(b) Exhibition swine. Swine from the United States which have been exhibited at the Royal Agricultural Winter Fair at Toronto or other publicly recognized expositions in Canada, including racing, rodeo, circus, or stage exhibitions in Canada, and have not been in that region for more than 90 days are eligible for return to the United States without Canadian health or test certificates, if they are accompanied by copies of the United States health certificate, issued and endorsed in accordance with the export regulations contained in Part 91 of this chapter for entry into Canada: Provided, That all swine offered for re-entry upon examination by the veterinary inspector at the U.S. port of entry, are found by the inspector to be free of communicable diseases and exposure thereto and are determined to be the identical swine covered by said certificates or are the natural increase of such swine born after official test dates certified on the dam's health certificate.