26 USC 4404
26 USC 4404
§ 4404 - Territorial extent
CHAPTER 35— TAXES ON WAGERING › Subchapter A— Tax on Wagers
The tax imposed by this subchapter shall apply only to wagers
(1) accepted in the United States, or
(2) placed by a person who is in the United States
(2)(A) with a person who is a citizen or resident of the United States, or
(2)(B) in a wagering pool or lottery conducted by a person who is a citizen or resident of the United States.