; (ii) under which the livestock are slaughtered not more than 14 days after the date on which the agreement is entered into; and (iii) under circumstances in which a reasonable competitive bidding opportunity exists on the date on which the agreement is entered into. (B) Reasonable competitive bidding opportunity For the purposes of subparagraph (A)(iii), circumstances in which a reasonable competitive bidding opportunity shall be considered to exist if— (i) no written or oral agreement precludes the producer from soliciting or receiving bids from other packers; and (ii) no circumstance, custom, or practice exists that— (I) establishes the existence of an implied contract (as determined in accordance with the Uniform Commercial Code); and (II) precludes the producer from soliciting or receiving bids from other packers. (b) General rule Of the quantity of livestock that is slaughtered by a covered packer during each reporting day in each plant, the covered packer shall slaughter not less than 50 percent of the quantity through spot market sales from nonaffiliated producers. (c) Nonpreemption Notwithstanding section 259, this section does not preempt any requirement of a State or political subdivision of a State that requires a covered packer to purchase on the spot market a greater percentage of the livestock purchased by the covered packer than is required under this section. (d) Relationship to other provisions Nothing in this section affects the interpretation of any other provision of this Act, including section 202. .