This LibGuide originally created by Rick Keogh will assist you in locating information on America's legal system (with information on the US Supreme Court, Constitution, as well as Federal and State Law).
Database of case law from the U.S. Supreme Court and U.S. Circuit Court of Appeals, in addition to several state supreme courts. Use the Advanced Search link to "Search for a Case"
Cases from the U.S. Supreme Court (1754-present), U.S. Circuit Courts of Appeal (generally 1951-present, with a few exceptions), and state cases (1997-present)