These volumes are arranged in chronological order and contain all public laws followed by private laws, presidential proclamations, reorganization plans, and constitutional amendments. Approximately five additional volumes are produced for each congressional session. Individual volumes have a subject index. Citations are by volume and page number. Matters dealing with food, drugs, and medical devices are included in Title 21.
Citations are by title and section number.
Two annotated sets of the USC are published by private firms that use the same numbering system. The United States Code Annotated is published by West Publishing Company. The United States Code Service is published by Lawyers Cooperative Publishing Company. Hearings arise from violations or controversies over interpretations of their regulations. These are conducted by administrative law judges or review boards.