Service upon an officer, employee, or agency of the United States must be made by serving the United States, and by delivering a copy of the summons and of the complaint to such officer, employee, or agency. If the agency being sued is a government corporation, a copy of the summons and of the complaint must be served in the manner service is authorized by state law or the rules of civil procedure for service on a domestic corporation.
N.D. Cent. Code § 28-06.2-02
Service upon officer, employee, agency, or government corporation of the United States
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.