The United States Code Annotated is a privately published edition of federal statutes, produced by West (a division of Thomson Reuters), that prints the full text of every federal law alongside editorial notes showing how courts have interpreted it. The statutory text matches the official United States Code exactly. What sets the annotated edition apart is the layer of research material wrapped around each section: case summaries, cross-references, legislative history, and citations to secondary sources. The whole body of federal statutory law is organized into 54 titles by subject, from agriculture to war and national defense.1Office of the Law Revision Counsel. Detailed Guide to the United States Code Content and Features
What You Get Beyond the Statute Text
The reason to reach for the USCA rather than the plain code is the annotations. The most useful piece is the Notes of Decisions: editor-written summaries of federal and state cases that have interpreted or applied the statute, organized by topic. If you want to see how courts have handled prosecutions under the mail fraud statute at 18 U.S.C. § 1341, or the tax evasion statute at 26 U.S.C. § 7201, the Notes of Decisions collect those rulings for you in one place instead of sending you off to run case searches from scratch.2Office of the Law Revision Counsel. 18 USC 1341 – Frauds and Swindles3Office of the Law Revision Counsel. 26 USC 7201 – Attempt to Evade or Defeat Tax
Below each statute, a Credits section lists the legislative history: original enactment date, the public laws that amended it, and the corresponding Statutes at Large citation. Cross-references point to related provisions elsewhere in the code (a bankruptcy question in Title 11 will send you to Title 28 on courts and judicial procedure) and to relevant sections of the Code of Federal Regulations, tying the statute to the agency rules that implement it. The annotations also cite legal encyclopedias such as Corpus Juris Secundum and use West’s Key Number System, a proprietary topic classification, to connect a statute to broader doctrinal categories.
Positive Law Titles and Why It Matters
Not every title in the code carries the same legal weight. Of the 54 titles, 27 have been enacted by Congress as “positive law,” meaning Congress passed the entire title as a statute in its own right. The text of a positive law title is treated by courts as the definitive statement of the law.4GovInfo. United States Code5Office of the Law Revision Counsel. Positive Law Codification
The rest were assembled by the Office of the Law Revision Counsel but never enacted as a single unit. Those titles are only “prima facie” evidence of the law: presumed correct, but if the codified wording conflicts with the underlying statute in the Statutes at Large, the Statutes at Large controls.5Office of the Law Revision Counsel. Positive Law Codification Conflicts are rare, but when the stakes are high and the title has not been enacted into positive law, researchers sometimes trace a provision back to the Statutes at Large citation the Credits section provides.
Finding a Statute When You Don’t Know the Number
Most people know a law by name, not by title and section. The USCA includes a Popular Name Table that links common names (Patriot Act, Affordable Care Act, Clean Air Act) to the public law number, Statutes at Large citation, and code sections where the act’s provisions live.6Office of the Law Revision Counsel. Popular Name Tool Look up “Affordable Care Act” and you’ll be routed to the Patient Protection and Affordable Care Act with every code section where its pieces were placed.
When you know only the subject, the multi-volume General Index organizes the whole code by keyword and legal concept. Searching “overtime pay” or “endangered species” leads you to the specific title and section numbers. The U.S. Senate’s own guidance notes these indexes are far easier than guessing which of the 54 titles is likely to contain what you need.7United States Senate. The United States Code
Check the Pocket Part or You’ll Cite Old Law
A hardbound legal set goes out of date the moment Congress passes a new law. The USCA handles this with pocket parts: thin softbound supplements slipped into a slit inside the back cover of each volume. Pocket parts contain amendments, new legislation, and recent decisions that postdate the volume’s printing.8Thomson Reuters. United States Code Annotated Checking the pocket part is not optional. Failing to check it is one of the most common research mistakes, because the bound volume may show a version of a statute Congress has since rewritten.
Between annual pocket part releases, Thomson Reuters publishes monthly supplementary pamphlets that capture fast-moving changes. When a pocket part outgrows the back cover slit, the publisher replaces the whole hardbound volume. Each spine shows the year of last revision, so you can gauge at a glance how current the bound text is before you even open it.
USCA or USCS?
The USCA is not the only annotated edition. LexisNexis publishes a competing product, the United States Code Service (USCS), and the two make different editorial choices.9LexisNexis. United States Code Service (USCS)
The USCA aims for comprehensive case coverage; the Notes of Decisions for a heavily litigated statute can run to hundreds of pages. The USCS is selective, including only the cases its editors judge most important. Thoroughness helps when you’re hunting for an obscure ruling. Selectivity helps when you want the leading cases fast. Each set also points to its own publisher’s secondary sources: the USCA to West’s Key Number System and Corpus Juris Secundum, the USCS to LexisNexis treatises and to administrative law decisions the print USCA leaves out. The USCS also derives its statutory text from the Statutes at Large rather than the codified United States Code, which the publisher promotes as an advantage in the uncommon situation where the two diverge.9LexisNexis. United States Code Service (USCS)
How to Access the USCA
Free Statutory Text Online
The plain text of every federal statute is free. The Office of the Law Revision Counsel maintains the full United States Code at uscode.house.gov, updated on a rolling basis.10Office of the Law Revision Counsel. About the United States Code Congress.gov, run by the Library of Congress, also carries the code along with federal legislation and bill text.11Library of Congress. Congress.gov What you won’t get at either site is the editorial layer: no Notes of Decisions, no cross-references to regulations, no secondary source citations. Free access covers you if all you need is the statutory language.
The Print Set
The full physical USCA is enormous. A complete set lists at $34,475 from Thomson Reuters and takes considerable shelf space.8Thomson Reuters. United States Code Annotated Almost no individuals own one. Public law libraries in county courthouses and at law schools generally keep the print set available at no charge, and reference librarians there can help you find the right title and section. Expect a photocopy fee of roughly $0.10 to $0.25 per page.
Westlaw and Lexis
For most legal professionals, the USCA lives on Westlaw, Thomson Reuters’ subscription research platform, with full text, all annotations, hyperlinked cross-references, and case summaries. Professional subscriptions typically run into the hundreds or thousands of dollars per month. Many public law libraries offer Westlaw Patron Access terminals at no charge to visitors; the terminals use IP-based authentication (no password needed), and session data is wiped after each user, though access is limited to whatever the library’s plan includes.12Thomson Reuters. Westlaw Patron Access The USCS is available through LexisNexis’s Lexis+ platform on comparable terms.
How to Cite the USCA
The standard citation format is title number, “U.S.C.A.,” section symbol and number, then publisher and volume date in parentheses. A typical cite: 42 U.S.C.A. § 1983 (West 2024). The date is the year printed on the volume (check the spine, title page, or copyright page, in that order). If you’re relying on updated language from a supplement, cite both: 42 U.S.C.A. § 1983 (West 2020 & Supp. 2025).
Courts and legal publications generally prefer a citation to the official United States Code (for example, 42 U.S.C. § 1983) when the title has been enacted into positive law. Cite the USCA when you actually relied on the annotations, or when the official code has not caught up to a recent amendment that the USCA supplement already reflects. The underlying legal authority is the same statute either way; the citation just tells your reader which edition you used.