Most binding federal law by volume is written not by Congress but by agencies filling in statutes: what counts as a safe workplace, a clean emission, an honest label. Rules carry full force of law, which is why the process for making them is itself law.
Agencies hold no inherent lawmaking power. Every rule must trace to a statute in which Congress delegated the details, and courts enforce that tracing, with renewed vigor since the major-questions cases.
Departments & agencies, under authority delegated by Congress
The Administrative Procedure ActThe 1946 law that sets the ground rules for agency action: how rules are made, how hearings run, and when courts can strike agency decisions.Full definition in the glossary's rulemakingThe legal process agencies must follow to issue binding regulations: publish a proposal, take public comment, respond, then publish a final rule.Full definition in the glossary cycle: proposed rule published in the Federal RegisterThe federal government's daily journal, publishing executive orders, proposed and final rules, and official notices since 1936.Full definition in the glossary, public comments (anyone may file), agency response, final rule, codification in the CFR. Significant rules pass through OIRA review first. The answering machinery is thick: Congressional Review ActA 1996 law letting Congress cancel a new agency rule by joint resolution within roughly 60 legislative days, with no Senate filibuster.Full definition in the glossary disapproval, appropriationA law permitting federal agencies to spend money. The Constitution forbids any spending without one, Congress's 'power of the purse'.Full definition in the glossary riders, and judicial reviewCourts' power to strike down laws and executive acts that violate the Constitution, established by Marbury v. Madison (1803).Full definition in the glossary for rules that are arbitrary, capricious, or beyond the statute.
Federal Register, A Guide to the Rulemaking Process
Terms to know: rulemakingThe legal process agencies must follow to issue binding regulations: publish a proposal, take public comment, respond, then publish a final rule.Full definition in the glossary · Administrative Procedure ActThe 1946 law that sets the ground rules for agency action: how rules are made, how hearings run, and when courts can strike agency decisions.Full definition in the glossary · Congressional Review ActA 1996 law letting Congress cancel a new agency rule by joint resolution within roughly 60 legislative days, with no Senate filibuster.Full definition in the glossary · Federal RegisterThe federal government's daily journal, publishing executive orders, proposed and final rules, and official notices since 1936.Full definition in the glossary