The U.S. Code is the official record of active, public laws in the country. It is arranged by subject into 50 "titles." Public Laws are often broken up into the appropriate title of the Code and citations are provided to the Public Law and the Statutes at Large (where legislative histories can be found).
Finding laws can sometimes be difficult if the name by which the law is popularly known differs from its official name. The links below allow one to search by the popular name in order to determine the actual name.