7 U.S. Code § 4817 - Preemption
(a) Promotion and consumer education; funds from pork producers
This chapter is intended to occupy the field of—
(b) Additional or different State regulation prohibited
The regulation of such activity (other than a regulation or requirement relating to a matter of public health or the provision of State or local funds for such activity) that is in addition to or different from this chapter may not be imposed by a State.
(c) Application of section
 So in original. Probably should be “section 4811(b)(2)(A) or 4812(b)(1)(B)”.