Definition
"The United States" carries distinct legal meanings depending on the context in which it appears. Researchers must determine which sense is operative before relying on any authority that uses the phrase.
1. The sovereign federal government. In constitutional and statutory law, "the United States" most commonly refers to the federal government as a legal entity — the sovereign body capable of suing and being sued, entering treaties, holding property, and exercising governmental authority. In this sense it is distinguished from individual states, from federal agencies acting under delegated power, and from the people collectively.
2. The geographic territory. "The United States" refers to the physical territory over which federal sovereignty extends — the fifty states, the District of Columbia, and, in varying degrees depending on the legal instrument in question, territories, insular possessions, and jurisdictional waters. The geographic definition is not uniform across legal regimes: admiralty law, customs law, immigration law, and constitutional law each draw the territorial boundary differently.
3. A party in litigation. When the federal government appears as plaintiff or defendant, it is styled "United States of America" or "United States." As a sovereign, the United States cannot be sued without its consent (sovereign immunity), and the rules governing its status as a litigant differ substantially from those governing private parties.
4. A collective political entity. In international law and treaty practice, "the United States" denotes the nation-state as a subject of international legal obligations — the entity that ratifies treaties, declares war, and maintains diplomatic relations.
---
Common Confusion
The phrase is used interchangeably in legal sources to mean the government, the territory, or the legal party, and sources do not always signal which meaning is intended. This ambiguity is most consequential in statutory construction: a federal statute extending a rule to conduct "within the United States" may reach different geographic territory than a constitutional provision using the same phrase. The Supreme Court has repeatedly required courts to examine context rather than assume a uniform meaning. Researchers working across subject areas — admiralty, immigration, taxation, federal jurisdiction — should treat each use of the phrase as carrying a term-specific definition unless the source makes the scope explicit.
---
Core Elements
The legal content of "the United States" in any given source depends on three variables:
Legal instrument type. Constitutional provisions, federal statutes, administrative regulations, and treaties may each define or imply different territorial and institutional scopes for the phrase.
Subject-matter regime. Admiralty and navigation law historically extended federal jurisdiction to all navigable waters regardless of state boundaries. Customs and tariff law defined the United States territorially for purposes of goods entering and leaving. Immigration law has long treated territorial presence differently from constitutional citizenship. These regimes developed their own working definitions, often without reference to one another.
Historical period. The geographic and institutional meaning of "the United States" expanded substantially from the founding era through the post-Civil War amendments, the acquisition of territories, and twentieth-century statutory elaboration. An 1850 treatise, an 1890 statute, and a 1950 regulation may each use the phrase to mean something different.
---
Why It Matters in Research
The trap in historical sources is assuming definitional stability. Bouvier's entries touching "the United States" address it piecemeal — appearing in the context of admiralty jurisdiction over navigable waters and in customs appraisal practice — rather than as a unified doctrinal concept. Neither the navigable-waters passages nor the customs passages in Bouvier purport to define the phrase comprehensively; they assume the reader understands which sense is operative. A researcher reading nineteenth-century materials must reconstruct the operative definition from context.
In admiralty research specifically, the navigable-waters doctrine built up through case law and treatise commentary an extensive definition of what waters fell "within the United States" for jurisdictional purposes — one that was not limited to coastal or tidal waters and extended to wholly intrastate tributaries when connected to interstate commerce. This is a specialized geographic-jurisdictional definition that does not automatically carry over into, say, constitutional or criminal law analysis.
For researchers working in constitutional history, the meaning of "the United States" as a political and legal entity shifted fundamentally after the Civil War. Pre-war sources often treat the phrase as describing a compact of states; post-war sources — and especially post-Fourteenth Amendment sources — treat it as describing a unified sovereign with direct relations to individual persons. This conceptual shift affects how older dictionary and treatise entries should be read.
In criminal and regulatory law, the phrase "defraud the United States" has its own doctrinal elaboration, reaching conduct that impairs governmental functions even without direct financial loss to the Treasury.
Researchers should also be alert to the distinction between "the United States" as a constitutional entity and "the United States government" as a bureaucratic structure. Statutory delegations, immunity doctrines, and standing questions may turn on which sense the drafters intended.
---
Historical Dictionary Support
Bouvier's Law Dictionary does not contain a dedicated, comprehensive entry for "the United States" as a unified legal concept. Instead, the phrase appears across dozens of subject-specific entries — admiralty, customs, jurisdiction, navigation — each using it operatively within a narrower doctrinal context. This fragmented treatment is itself informative: it reflects the nineteenth-century common-law assumption that the phrase was self-evident in meaning and required no general definition, even as its specific applications were being worked out case by case.
The admiralty passages in Bouvier illustrate the judicial expansion of federal navigable-waters jurisdiction through the mid-to-late nineteenth century, incorporating non-tidal rivers, interstate lakes, connecting waters, and intrastate tributaries with commercial connections to interstate navigation. These passages cite extensively to Supreme Court and circuit court decisions and are reliable as guides to the state of admiralty doctrine in their period, but they should not be read as defining "the United States" for other purposes.
The customs appraisal passage addresses an entirely different institutional sense of the phrase — the federal administrative apparatus (treasury, senate confirmation, ports of entry) — and is useful primarily for understanding the statutory organization of the customs service in the late nineteenth century.
Neither passage in the source material attempts to synthesize a general definition. Researchers needing a general legal definition of "the United States" as a constitutional entity will find more useful treatment in constitutional treatises and in the body of Supreme Court decisions construing Article I, Article II, and the Fourteenth Amendment than in general legal dictionaries of any era.
---
Jurisdictional Note
The meaning of "the United States" for jurisdictional and regulatory purposes varies by statutory scheme and has been the subject of significant federal litigation, particularly regarding insular territories, tribal lands, and the outer continental shelf. Federal circuit courts have not always agreed on whether specific statutory uses of the phrase include or exclude particular territories. Researchers working on questions involving Puerto Rico, Guam, the Virgin Islands, or other non-state territories should treat each statutory regime separately.
---
Encyclopedia Cross-Reference
The Law Mind Environmental & Energy Law Encyclopedia: Navigable Waters, Waters of the United States, and Jurisdiction — directly relevant to the admiralty and geographic-jurisdictional sense of the phrase.
The Law Mind Criminal Law Encyclopedia: Conspiracy to Defraud the United States (18 USC 371) — relevant to the governmental-entity sense and its doctrinal elaboration in criminal law.
The Law Mind Constitutional Law Encyclopedia: Birthright Citizenship — The Fourteenth Amendment and United States v. Wong Kim Ark — relevant to the constitutional meaning of "the United States" as a sovereign in relation to persons born within its territory.
---