9 C.F.R. § 95.6
Offal derived from bovines is prohibited importation into the United States unless it meets the requirements for the importation of meat, meat products, and meat byproducts in either § 94.19 , § 94.20 , or § 94.21 , with the exception of the requirements in §§ 94.19(c) , 94.20(b) , and 94.21(b) , respectively. The person importing the offal must obtain a United States Veterinary Permit for Importation and Transportation of Controlled Materials and Organisms and Vectors by filing a permit application on VS Form 16-3. To apply for a permit, file a permit application on VS Form 16-3, which is available from Strategy and Policy, Veterinary Services, APHIS, 4700 River Road, Riverdale, MD 20737-1231, or electronically at https://efile.aphis.usda.gov/s/vs-permitting-assistant. The application for such a permit must state the intended use of the offal and name and address of the consignee in the United States.
9 C.F.R. §95.6