U.S. Code / Title 26 — Internal Revenue Code / Subtitle A—Income Taxes / Chapter 1—Normal Taxes and SurtaxesTitle 26SubchapterSubchapter N—Tax Based on Income From Sources Within or Without the United StatesContentsPart I—Source Rules and Other General Rules Relating to Foreign IncomePart II—Nonresident Aliens and Foreign CorporationsPart III—Income from Sources Without the United StatesPart IV—Domestic International Sales CorporationsPart V—International Boycott Determinations