Free online access to official publications from all three branches of the Federal Government

Access to legislative information including roll call votes, Congressional bills, Congressional Record, public laws, and more.

"The United States Statutes at Large, typically referred to as the Statutes at Large, is the permanent collection of all laws and resolutions enacted during each session of Congress. "
Laws are published in chronological order by chamber and passage date.
Note: you may find it easier to use the version at the Law Library of Congress.

The cumulative law of the United States. Newly-passed laws are integrated into the section(s) based on subject(s).
Note: be sure to check the Currency link at the very top of the page to see how up-to-date this version is.

From the Law Library of Congress

Daily publication providing information on Administrative Regulations and Notices - proposed regulations, calls for comments, final rule (regulation).
Final rules are incorporated by topic into the Code of Federal Regulations
(Analogy: the Congressional Record does this for the creation and enactment of new laws, which are then incorporated by topic into the United States Code)
FR content is also included in govinfo

"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. "

Selected documents from late 1800s to curren - does not include all federal government agencies. Intended to promote public involvement - you can submit a comment about a proposed rule/regulation.
This is where you can access Docket Materials (supporting materials, public comments, scientific findings, etc. - these are not included in the FR or the CFR).

Registration with free account provides basic access. Tracks one state and Congress.

BillTrack50 covers all 50 states, DC City Council, and Congress. Historical legislation information is available back to 2011, historical regulation coverage varies. You can get a free account with basic service.
"Congratulations on your excellent decision to sign up for our free account, which gives you access to our bill, legislator and committee search tools in the current session. You also have access to AI Assist - AI generated plain English summaries of bills and AI-powered similar bills searching."

"We publish the status of federal legislation, information about your representative and senators in Congress including voting records, and original research on legislation.
"Use GovTrack to track bills for updates by getting alerts and understand the broader context of legislation through our statistical analyses. Read our original research on GovTrack Insider..."
Free, but they take donations and memberships

A bipartisan organization providing states with support and information. Maintains a 50-state searchable bill-tracking database, mostly focusing on specific current and archived topics.