9 CFR 310.8 : Animals And Animal Products (§ 1.1 To Parts 593-599) — (Part 200 To Parts 593-599) — Food Safety And Inspection Service, Department Of Agriculture (§ 300.1 To Parts 593-599) — Agency Organization And Terminology; Mandatory Meat And Poultry Products Inspection And Voluntary Inspection And Certification (§ 300.1 To § 381.524) — Post-Mortem Inspection (§ 310.1 To § 310.25) — Passing and marking of carcasses and parts.

Carcasses and parts found to be sound, healthful, wholesome, and otherwise not adulterated shall be passed and marked as provided in part 316 of this subchapter. In all cases where carcasses showing localized lesions are passed for food or for cooking and “U.S. Retained” tags are attached to the carcasses, the affected tissues shall be removed and condemned before the tags are removed. “U.S. Retained” tags shall be removed only by a Program employee.