American Government,
Clearly Explained.

BriefGov.us — a plain-language reference to who does what in the U.S. government: the branches, departments, and agencies, the offices and processes, and the principles and documents behind them.

Branches (76) Departments (158) Agencies (106) Offices & Roles (63) Processes (124) Principles (68) Documents & Cases (102) States & Local (34)
Guides
View all guides
Guide
How to Get a Federal Job
A practical guide to finding and applying for federal jobs: searching USAJOBS, reading a job announcement, grades and qualifications, the two-page resume and essay questions, veterans and student pathways, the steps after you apply, and how 2025 changes affect applicants.
Guide
How to Visit the Capitol, White House, and Supreme Court
A practical guide to touring the seats of government in Washington: booking Capitol tours and gallery passes, requesting White House tours through Congress, visiting the Supreme Court, nearby sites, and security rules.
Guide
How to Read a Supreme Court Opinion
A practical guide to reading Supreme Court decisions: where to find them, the case name and citation, the syllabus, the opinion of the Court, concurrences and dissents, what the vote line means, holdings versus side comments, and how to read emergency orders.
Guide
How to Comment on a Federal Regulation
A practical guide to taking part in federal rulemaking: how notice and comment works, finding proposed rules on Regulations.gov and the Federal Register, writing an effective comment, other ways to weigh in, and how 2025 policies changed the process.
The Federal Org Chart
See how every branch, department, agency, and office fits together — and which ones were dissolved, merged, or are being reorganized.
Browse by Category
Branches
76 entries
Departments
158 entries
Agencies
106 entries
Offices & Roles
63 entries
Processes
124 entries
Principles
68 entries
Documents & Cases
102 entries
States & Local
34 entries
Featured Entries
Branches  / The Judiciary
The Federal Judiciary
The third branch: one Supreme Court, thirteen circuits, ninety-four districts, and judges who serve for life
Departments  / Homeland Security
The Department of Homeland Security
The newest cabinet department: borders, immigration, aviation security, disaster response, the Coast Guard, and the Secret Service
Branches  / Congress
The United States Senate
The upper chamber: two senators per state, six-year terms, and the power to confirm, ratify, and try impeachments
Departments  / Treasury
The Department of the Treasury
The department that collects the taxes, prints the money, manages the debt, and polices the financial system
Processes  / Elections & Representation
The Electoral College
How Americans actually choose a President: 538 electors, 270 to win, and the state-by-state rules behind them
Principles  / Executive Power
Unitary Executive Theory
The view that the President alone controls the entire executive branch, and the long fight over how far that control extends
Processes  / Appointments & Oversight
Congressional Oversight
How Congress investigates and monitors the executive branch, and the limits on that power
Departments  / Commerce
The National Oceanic and Atmospheric Administration
The weather forecast, the hurricane center, the fisheries, the nautical charts, and the satellites that watch the planet
Departments  / Commerce
The Census Bureau
The agency that counts every resident every ten years and decides how 435 House seats and trillions in funding are divided
Departments  / Health and Human Services
The National Institutes of Health
The largest funder of medical research in the world: 27 institutes, 47 billion dollars, and 300,000 scientists on its grants
Principles  / Constitutional Principles
Separation of Powers
Why the Constitution divides federal power among three branches, and how courts police the lines between them
Processes  / Lawmaking
Budget Reconciliation
The fast-track procedure that lets tax and spending bills pass the Senate by simple majority, immune from filibuster
Recently Added
Processes  / Executive Action
Withdrawals from International Organizations (2025 to 2026)
How the United States left the World Health Organization, the Paris Agreement, and dozens of other international bodies in 2025 and 2026, and the legal debate over presidential withdrawal
Processes  / Security & Emergency
The 2026 Venezuela Operation
The January 2026 U.S. military raid that struck targets in Caracas and captured Venezuelan leader Nicolas Maduro, and the war powers fight that followed
Documents & Cases  / Structural Statutes
Help America Vote Act of 2002
The law passed after the 2000 Florida recount that funded new voting machines, required provisional ballots and statewide voter lists, and created the Election Assistance Commission
Documents & Cases  / Structural Statutes
National Voter Registration Act of 1993
The motor voter law requiring states to offer registration at driver license and public assistance offices, accept a national mail form, and follow rules for removing voters
Documents & Cases  / Structural Cases
Moore v. Harper (2023)
The case rejecting the independent state legislature theory and confirming that state courts may review congressional maps under state constitutions
Documents & Cases  / Structural Cases
Watson v. RNC (2026)
The 2026 case holding that federal Election Day laws do not stop states from counting mail ballots that arrive after Election Day
Documents & Cases  / Structural Cases
NRSC v. FEC (2026)
The 2026 case striking down federal limits on how much political parties may spend in coordination with their own candidates
Documents & Cases  / Structural Cases
Louisiana v. Callais (2026)
The 2026 decision that struck down a majority-Black congressional district and sharply limited when the Voting Rights Act can justify race-based districting