12 C.F.R. § 380.23
(a) The term “amounts owed to the United States” as used in § 380.21(a)(3) includes all unsecured amounts owed to the United States, other than expenses included in the definition of administrative expenses of the receiver under § 380.22 that are related to funds provided for the orderly liquidation of a covered financial company, funds provided to avoid or mitigate adverse effects on the financial stability of the United States or unsecured amounts owed to the U.S. Treasury on account of tax liabilities of the covered financial company, without regard for whether such amounts are included as debt or capital on the books and records of the covered financial company. Such amounts shall include obligations incurred before and after the appointment of the Corporation as receiver. Without limitation, “amounts owed to the United States” include all of the following, which all shall have equal priority under § 380.21(a)(3):
(b) Other than those amounts included in paragraph (a) of this section, unsecured amounts owed to a department, agency or instrumentality of the United States that are obligations incurred in the ordinary course of the business of the covered financial company prior to the appointment of the receiver generally will not be in the class of claims designated as “amounts owed to the United States” under section 380.21(a)(3), including, but not limited to: