2 CFR §417.30

The USDA policies and procedures that you must follow are the policies and procedures specified in this regulation and each applicable section of the OMB guidance in subparts A through I of 2 CFR part 180, as that section is supplemented by the section in this part with the same section number. The contracts that are covered transactions, for example, are specified by 2 CFR 180.220 as supplemented by § 417.220. For any section of OMB guidance in subparts A through I of 2 CFR part 180 that has no corresponding section in this part, USDA policies and procedures are those in the OMB guidance.