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U.S. Code › Title 28 › Part VI › Chapter 176 › Subchapter A › § 3002
28 U.S. Code § 3002 - Definitions
You Will Find Under Subsection 15:
(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.