LET'S NOT FORGET THAT
"United States" is the District of Columbia incorporated.
"The United States government is a foreign corporation with respect to a State" Volume 20: Corpus Juris Sec. § 1785,
Also: NY re: Merriam 36 N.E. 505 1441 S. 0.1973, 14 L. Ed. 287
BUT it's NOT a foreign corporation if you live in a ZIP code, since all ZIP codes are in FEDERAL REGIONS, such as CA, FL, TX, etc., NOT in states such as California.