When a bill is passed by both houses of Congress and signed by the President it be comes a public law and is published in the statutes at large.
"The United States Code is a consolidation and codification by subject matter of the general and permanent laws of the United States. It is prepared by the Office of the Law Revision Counsel of the United States House of Representatives."
States follow the same pattern as the federal government. State legislatures are not all arranged the same.
All Native American reservations fall under the jurisdiction of federal law. Tribes can and do have more specific laws, much as states do.
For a list of tribal laws and regulations, visit the National Indian Law Library.
The Law Library of Congress also has a listing of tribes and their legal materials.
