For purposes of this paragraph, the term "possession of the United States" includes Guam, the Midway Islands, the Panama Canal Zone, the Commonwealth of Puerto Rico, American Samoa, the Virgin Islands, and Wake Island.
26 C.F.R. §301.7401-1
For purposes of this paragraph, the term "possession of the United States" includes Guam, the Midway Islands, the Panama Canal Zone, the Commonwealth of Puerto Rico, American Samoa, the Virgin Islands, and Wake Island.
26 C.F.R. §301.7401-1