In the updated, fourth edition of this classic text which has been translated into over a dozen languages, constitutional scholar and Columbia Law School professor E. Allan Farnsworth provides a clear explanation of the structure and function of the U.S. legal system in one handy reference. is designed to be a general introduction to the structure and function of the legal system of the United States, and is especially useful for those readers who lack familiarity with fundamental establishments and practices.

This text also gives the reader a clear understanding of how to research the law, the importance of case law versus statutes, and the difference between private and public law. It illustrates issues that may be confusing or troublesome and provides a solid general overview. It includes a new introduction by Steve Sheppard.