US codes TITLE 28 > PART VI > CHAPTER 176 > SUBCHAPTER A > § 3002
§ 3002. Definitions
As used in this chapter:
(1) “Counsel for the United States” means—
(A) a United States attorney, an assistant United States attorney designated to act on behalf of the United States attorney, or an attorney with the United States Department of Justice or with a Federal agency who has litigation authority; and
(B) any private attorney authorized by contract made in accordance with section 3718 of title 31 to conduct litigation for collection of debts on behalf of the United States.
(2) “Court” means any court created by the Congress of the United States, excluding the United States Tax Court...
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(15) “United States” means—
(A) a Federal corporation;
(B) an agency, department, commission, board, or other entity of the United States; or
(C) an instrumentality of the United States.