(a) No product subject to the provisions of this subpart shall be brought into the United States except in accordance with the regulations in this subpart and part 94 of this subchapter; nor shall any such product be handled or moved after physical entry into the United States before final release from quarantine or any other form of governmental detention except in compliance with such regulations; Provided, That, except as prohibited by section 306 of the Act of June 17, 1930, as amended (19 U.S.C. 1306), the Administrator may upon request in specific cases permit products to be brought into or through the United States under such conditions as he or she may prescribe, when he or she determines in the specific case that such action will not endanger the livestock or poultry of the United States.

(b) Animal semen may not be imported into the United States from any region other than the region in which it was collected.