For information about constitutional law research generally, please see our Constitutional Law and History Research Guide.
|Congress.gov||Updated regularly||The Constitution Annotated contains legal analysis and interpretation of the U.S. Constitution.|
|Founder's Constitution||N/A||A collection containing the Constitution and related original-source documents.|
|GPO Access||Annotations updated through 2010||Annotated version (2002) of the Constitution prepared by the Congressional Research Service.|
|Legal Information Institute||Annotations updated through 2000||Annotated version (1992) of the Constitution prepared by the Congressional Research Service.|
Online access to state constitutions varies widely. Please consult our state research guides for information about individual jurisdictions.