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Legal Information Institute. Cornell University
A free-access site serving as a gateway to US and state laws (linking to the US. Code, The Code of Federal Regulations), court opinions and current awareness on legal issues. Search feature and links to Key and all US Supreme Court opinions, federal courts opinions, etc. Highlights recent law events and opinions.
FindLaw for legal professionals
Produced by a division of WestLaw, the site currently has free access to US Federal and sate laws, municipal codes; Supreme Court cases: the US Constitution, US Code, Code of Federal Regulations, and the Federal Register, etc. Links to US courts of appeals, US trial courts, and others. Many links to legal news, legal reference sources, and resources on law topics.
Google Scholar now indexes legal opinions and journals. Click Case Law to narrow your search to US Federal Courts or to search court opinions by state.