7 CFR § 57.35 - Eggs in commerce.
(a)
(1) For eggs that moved or are moving in interstate or foreign commerce, no State or local jurisdiction:
(i) May require the use of standards of quality, condition, grade, or weight classes which are in addition to or different than the official standards; or
(ii) Other than states in noncontiguous areas of the United States, may require labeling to show the State or other geographical area of production or origin.
(2) This shall not preclude a State from requiring the name, address, and license number of the person processing or packaging eggs to be shown on each container.
(b) Any State or local jurisdiction may exercise jurisdiction for the purpose of preventing the distribution of eggs for human food purposes that are in violation of this part or any other Federal acts or State or local laws consistent therewith.