CFR›Title 7›Subtitle B›Chapter IV›Part 400›Subpart P ContainsSections 400.351–400.352CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart P—Preemption of State Laws and Regulations Sections 400.351 § 400.351 Basis and applicability. 400.352 § 400.352 State and local laws and regulations preempted. Authority7 U.S.C. 1506, 1516.Source55 FR 23069, June 6, 1990, unless otherwise noted. Previous O Subpart O—Non-Standard Underwriting Classification System Regulations for the 1991 and Succeeding Crop Years Next Q Subpart Q—General Administrative Regulations; Collection and Storage of Social Security Account Numbers and Employer Identification Numbers