Constitutions, Codes & Regulations

United States Constitution
Browse the U.S. Constitution and locate analysis and interpretation of the Constitution
via annotations of cases decided by the Supreme Court of the United States. 

The United States Code
Search the official version of United States Code(unannotated) using Boolean and proximity connectors.  Use classification tables to update a section of code.

Code of Federal Regulations
Search and/or browse either the most current or historical copies of the CFR back to 1996. 

Electronic Code of Federal Regulations(beta)
The Electronic Code of Federal Regulations (e-CFR) is a prototype of a currently updated version of the Code of Federal Regulations (CFR). Search using Boolean logic and/or proximity connectors.

Federal Register
The Federal Register is the official daily publication for rules, proposed rules, and notices of Federal agencies and organizations, as well as executive orders and other presidential documents.  Use the Federal Register to update a CFR search.

Regulations.gov
Find, review, and submit comments on Federal documents that are open for comment and published in the Federal Register, the Government’s legal newspaper.