"The United States is located in the District of Columbia." - California Commercial Code 9307 h)
“The United States Government is a foreign corporation with respect to a state.” Volume 20: Corpus Juris Secundum, (P 1785: NY re: Merriam 36 N.E. 505 1441 S.Ct. 1973, 41 L. Ed. 287)
Here's what makes US jurisdiction clear:
“The laws of Congress in respect to those matters do not extend into the territorial limits of the states, but have force only in the District of Columbia , and other places that are within the exclusive jurisdiction of the national government.” CAHA v. U.S., 152 U.S. 211 (1894)
U.S. Code, Title 28 – JUDICIARY AND JUDICIAL PROCEDURE, (Chapter 176) Section 3002 (15) (a, b, & c); ~
(15) ” United States ” means – (A) a Federal corporation; (B) an agency, department, commission, board, or other entity of the United States; (C) an instrumentality of the United States
"The IRS is not a U.S. Government Agency. It is an Agency of the IMF." (Diversified Metal Products v. IRS et al. CV-93-405E-EJE U.S.D.C.D.I., Public Law 94-564, Senate Report 94-1148 pg. 5967, Reorganization Plan No. 26, Public Law 102-391.)
The IMF is an Agency of the UN. (Blacks Law Dictionary 6th Ed. Pg. 816)
The U.S. has not had a Treasury since 1921. (41 Stat. Ch.214 pg. 654)
The U.S. Treasury is now the IMF. (Presidential Documents Volume 29-No.4 pg. 113, 22 U.S.C. 285-288)
The FCC, CIA, FBI, NASA and all of the other alphabet gangs were never part of the United States government, even though the "US Government" held shares of stock in the various Agencies. (U.S. V. Strang, 254 US 491, Lewis v. US, 680 F.2d, 1239)
************************************
BTW, while federal enclaves/regions can be WITHIN the territorial limits of a State (of the Union), they are WITHOUT the State, as the State has no jurisdiction inside of them. Only Congress has an exclusive jurisdiction in those federal regions, but also its municipal corporations, such as CITY of XYZ or STATE of XYZ.
And that obviously includes federal ZIP regions. I.e. CITY of XYZ and STATE of XYZ are MUNICIPAL corporations of United States, NOT dejure governments of the Republic, and they operate in federal ZIP regions.