18 USC 23.1 - Court of the United States defined

As used in this title, except where otherwise expressly provided[2] the term court of the United States includes the District Court of Guam, the District Court for the Northern Mariana Islands, and the District Court of the Virgin Islands.
[1] So in original. No section 22 has been enacted.
[2] So in original. Probably should be followed by a comma.