Definition
In law, "foreign" means belonging to, arising in, or governed by a jurisdiction other than the one currently in question. The term is relational and contextual: what is foreign depends entirely on the reference point of the forum. It does not require international separation — a judgment from another U.S. state is foreign to the state in which enforcement is sought, just as a judgment from another country is foreign to any domestic court.
The word carries several distinct legal applications:
1. Foreign jurisdiction / foreign law: Law made, enacted, or applied in a different sovereign or territorial authority. In interstate contexts, the law of a sister state. In international contexts, the law of another nation.
2. Foreign judgment: A judgment rendered by a court outside the forum jurisdiction. Includes both judgments of other U.S. states (given full faith and credit effect under the U.S. Constitution) and judgments of foreign nations (given comity effect, not constitutional compulsion).
3. Foreign corporation: A corporation incorporated under the laws of a state or nation other than the one in which it is currently operating or being sued.
4. Foreign attachment / foreign garnishment: A creditor's remedy allowing seizure of a debtor's property located within the forum jurisdiction, even when the debtor is absent or resides elsewhere.
5. Foreign matter / foreign to the issue: In pleading and evidence, something extrinsic to, or outside the scope of, the matter in controversy.
Common Language
Modern common usage (Wiktionary): A foreign person is one from another country; foreign describes something originating outside one's own nation or group. An "outhouse" and areas outside parish limits also appear as secondary meanings.
Historical common usage (Webster's 1913): Outside, extraneous, alien, not native; belonging to another country, nation, or sovereignty. Remote or separated.
The gap between common and legal usage is real but directional rather than contradictory. In ordinary speech, "foreign" almost always implies international difference — another country, another nationality. In law, the term is jurisdiction-relative, not nation-relative. A California court routinely refers to a Texas judgment as a "foreign judgment," and a California corporation doing business in Nevada is a "foreign corporation" in that state. Researchers accustomed to the common meaning may overlook entirely domestic, interstate legal materials when the source uses "foreign" as a descriptor.
Common Confusion
Foreign vs. Alien: In legal usage, "alien" typically refers to a person who is not a citizen or national of the forum country — a status concept tied to persons and nationality. "Foreign" is broader and more flexible, applying to documents, judgments, corporations, laws, and jurisdictions, and does not require international crossing. A Texas LLC is a foreign corporation in Ohio but is not an alien entity.
Foreign vs. Domestic: These are the operative antonyms in legal research. "Domestic" refers to whatever originates within the forum jurisdiction. The same instrument, entity, or judgment is simultaneously domestic in one jurisdiction and foreign in another.
Why It Matters in Research
The jurisdictional relativity of "foreign" is the central research trap. Historical sources — statutes, treatises, court opinions — use "foreign" to mean different things depending on the era, the subject matter, and the forum. In early American law, "foreign" judgment or "foreign" attachment often meant from another state of the Union, not from abroad. Researchers searching a corpus for materials on international matters must not assume that "foreign" signals cross-national content; it may be nothing more than interstate.
In corporate law research, the foreign/domestic distinction is procedurally critical: foreign corporations in most states must register, appoint agents, and comply with qualification statutes before transacting business. Historical materials on corporate regulation use "foreign corporation" heavily in this domestic interstate sense.
In conflict of laws and private international law, the meaning of "foreign law" shifts depending on whether the forum is a U.S. state court, a federal court, or an international tribunal. Federal courts sitting in diversity treat the law of a sister state as foreign law for choice-of-law purposes but not for full faith and credit purposes — a distinction that affects how proof of that law is handled.
Tax research is a separate domain: "foreign" in tax law carries statutory definitions tied to the Internal Revenue Code's international tax framework. The foreign tax credit, foreign-source income, and controlled foreign corporation rules each define "foreign" in ways that may not track the general jurisdictional meaning. Researchers crossing between general legal corpus materials and tax materials should not assume terminological consistency.
The term also appears as a near-synonym for "extrinsic" or "outside the record" in older pleading and evidence sources — as in "foreign to the issue" or "foreign matter." This usage has largely fallen away in modern practice but appears frequently in 19th-century materials.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) captures the term's breadth accurately: "belonging to another nation or country; belonging or attached to another jurisdiction; made, done, or rendered in another state or jurisdiction; subject to another jurisdiction; operating or solvable in another territory; extrinsic; outside; extraordinary." This formulation correctly treats the interstate and international senses as parallel rather than hierarchical, which matches actual legal usage across American history.
The historical dictionaries are less helpful on the boundaries. They do not flag the tax-law deviation, the evidentiary use of "foreign to the issue" as a distinct idiom, or the full faith and credit distinction that separates sister-state judgments from truly international ones in terms of the legal effect. A researcher relying solely on Black's 2nd Ed. will have the right orientation but will need to track how courts and statutes in specific subject areas have refined the term.
Webster's 1913 reflects the ordinary-language baseline — outside, extraneous, alien — which is largely consistent with the legal meaning but misses the jurisdiction-relative character that makes the legal usage precise.
Jurisdictional Note
In U.S. state corporate law, every state defines "foreign corporation" by reference to its own borders; a corporation is foreign if it is incorporated elsewhere, regardless of whether "elsewhere" is another state or another country. Some states have separate regulatory tracks for foreign (interstate) versus alien (international) corporations, while others treat them identically. Researchers working on corporate qualification issues should check whether the relevant state statute distinguishes these categories.
Encyclopedia Cross-Reference
Marriage — Recognition of Foreign and Interstate Marriages (The Law Mind Family Law Encyclopedia) — directly addresses when marriages contracted under foreign law are recognized in a domestic forum.
Foreign Tax Credit Individuals and International Tax Foreign Tax Credit (The Law Mind Tax Encyclopedia) — address the specialized statutory meaning of "foreign" in federal income tax law, which operates under its own definitional framework.