Regulations are rules made by federal agencies. They define the way that agencies carry out law. The terms "rule" and "regulation" are interchangeable.
Proposed rules are published first the the Federal Register. Proposed rules typically have a period of time that allows for public comment.
Final rules are also published in the Federal Register and then codified in the Code of Federal Regulations. (CFR).
Regulations can sometimes be found on websites for federal agencies.
The Federal Register
The Federal Register is the official daily gazette of the United States Government. It includes proposed and final regulations, notices of Federal agencies and organizations, and executive orders and presidential documents.
Easily searchable version of the Federal Register which includes documents since 1994. Search by popular documents, agency, and topic, and limit by proposed and final rules. This site is jointly managed by the Office of the Federal Register, the National Archives, and the U.S. Government Publishing Office.
A browsable version of the Federal Register with documents back to 1936. GovInfo is the official system of record for authenticated and original copies of government documents.
Regulations.gov provides public users with access to federal regulatory content. This site includes public comments and related materials for proposed regulations.
Westlaw is a legal database that includes secondary and primary legal sources. It contains statutes, codes, and case law. Westlaw also includes the legal encyclopedias, journals, treatises, and law reviews, as well as public and private business information and coverage of news sources.
The Pennsylvania Bulletin is the Commonwealth's official gazette for information and rulemaking. It includes proposed and final rules, state agency notices, Governor's proclamations and executive orders, and other official notices.