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United States

United States of America

Common lawFederal presidential constitutional republicReviewed· 2026-06-18
Capital
Washington, D.C.
Population
335,000,000
Languages
English, Spanish
Currency
USD

United States · Legislation

Legislation and primary sources

Where to find the authoritative text of the law in United States, and how to confirm it is still in force.

Sources of law, ranked

Constitution
Supreme law; invalidates conflicting federal and state action.
Federal statutes
Acts of Congress, compiled in the United States Code.
Federal regulations
Agency rulemaking under delegated authority, in the CFR.
Treaties
Ratified with two-thirds Senate consent; supreme law alongside statutes.
Case law
Binding precedent within each appellate hierarchy (stare decisis).
State constitutions and codes
Govern all residual, non-federal subject matter.

The legislative process

A bill is introduced in either chamber, referred to committee, reported, debated and voted. It must pass both chambers in identical text, then be signed by the President or survive a veto by a two-thirds vote in each chamber.

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