Code of Federal Regulations

The Code of Federal Regulations (CFR) annual edition is the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. It is divided into 50 titles that represent broad areas subject to Federal regulation. The 50 subject matter titles contain one or more individual volumes, which are updated once each calendar year, on a staggered basis. The annual update cycle is as follows: titles 1-16 are revised as of January 1; titles 17-27 are revised as of April 1; titles 28-41 are revised as of July 1; and titles 42-50 are revised as of October 1. Each title is divided into chapters, which usually bear the name of the issuing agency. Each chapter is further subdivided into parts that cover specific regulatory areas. Large parts may be subdivided into subparts. All parts are organized in sections, and most citations to the CFR refer to material at the section level. About the Code of Federal Regulations (annual edition).

The Code of Federal Regulations (CFR) is the codification of the general and permanent rules and regulations (sometimes called administrative law) published in the Federal Register by the executive departments and agencies of the federal government of the United States.
The CFR is published by the Office of the Federal Register, an agency of the National Archives and Records Administration (NARA).

The CFR is divided into 50 titles that represent broad areas subject to Federal regulation.
Contents
•    1 Background
•    2 Effect of administrative law
•    3 Publication of administrative law
•    4 List of regulation titles
•    5 References
•    6 See also
•    7 External links

Background
Every regulation in the CFR must have an "enabling statute," or statutory authority. The United States Code (U.S. Code) precedes the CFR and contains statutes enacted by Congress. The CFR contains regulations, which spell out in further detail how the executive branch will interpret the law.[1] The two documents represent different stages in the legislative process. The U.S. Code is a codification of legislation, while the CFR serves as administrative law. Administrative law exists because the Congress often grants broad authority to executive branch agencies to interpret the statutes in the U.S.Code (and in uncodified statutes) which the agencies are entrusted with enforcing. Congress may be too busy, congested, or gridlocked to micromanage the jurisdiction of those agencies by writing statutes that cover every possible detail, or Congress may determine that the technical specialists at the agency are best equipped to develop detailed applications of statutes to particular fact patterns as they arise.
Under the Administrative Procedure Act, the agencies are permitted to promulgate detailed rules and regulations through a public "rulemaking" process where the public is allowed to comment, known as public information. After a period of time, the rules and regulations are usually published in the Federal Register.
The Parallel Table of Authorities and Rules in the index to the CFR correlates laws with their regulations using U.S. Code citations, Statutes at Large citations and Public Law numbers.[2]
Effect of administrative law

The rules are treated by the courts as being as legally binding as statutory law, provided the regulations are a reasonable interpretation of the underlying statutes. This "reasonable interpretation" test or Chevron doctrine was articulated by the U.S. Supreme Court in a unanimous decision (6 voting, 3 recused) involving a challenge to new Clean Air Act regulations promulgated by the Reagan administration in 1981. See Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc.[3]

For example, if Congress enacted a law that simply stated that there are not to be "excessive" levels of mercury in any significant body of water in the United States (but defined things no further), an entity designated, as part of the law, to enforce it (probably the United States Environmental Protection Agency (EPA)) could define in a scientific way what an excessive level of mercury is, as well as what constitutes a significant body of water. The Agency's definitions and its plan of enforcement for what Congress intended (along with listed penalties for violation coming from Congress unless Congress specified otherwise) will all go into the CFR.
Also, enabling legislation can be passed by Congress which gives a federal non-Congressional entity wide latitude in creating rules (law of bases). For example, the EPA could be designated by Congress to promulgate rules "that control harmful pollutants"; the Agency could then promulgate broad rules (including definitions and enforcement provisions), in the absence of existing specific laws, to control lead emissions, radon emissions, pesticide emissions, and so forth. Such rules, including any definitions and enforcement provisions created by Congress or the Agency, will all go into the CFR.

Publication of administrative law
The rules and regulations are first promulgated or published in the Federal Register. Each is given a CFR citation, such as 42 CFR 260.11(a)(1), that can be cited immediately, without waiting for a page number from the physical copy. The aforementioned citation would be read, "title 42, part 260, section 11, paragraph (a)(1)."

NARA also keeps an online version of the CFR, the e-CFR, that is normally updated two days after changes to the regulations, that have been published in the Federal Register, become effective.
While new regulations are continually becoming effective, the printed volumes of the CFR are issued once each calendar year, on this schedule:
•    Titles 1–16 are updated on January 1
•    Titles 17–27 are updated on April 1
•    Titles 28–41 are updated on July 1
•    Titles 42–50 are updated on October 1