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56 FR 30422, July 2, 1991, unless otherwise noted.
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The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.
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Nomenclature changes to part 40 appear at 71 FR 34520 and 34521, June 15, 2006.
An immigrant or nonimmigrant seeking to enter an area which is under U.S. administration but which is not within the “United States”, as defined in INA 101(a)(38), is not required by the INA to be documented with a visa unless the authority contained in INA 215 has been invoked.