Key facts
3
Branches of the federal government
Arts. I, II, III
9
Supreme Court justices, a number set by law
28 U.S.C. § 1
Two-thirds
Senators present needed to convict in an impeachment trial
Art. I, § 3, cl. 6
Legislative branch: makes laws
Congress has two chambers, the Senate and the House of Representatives. The Senate has 100 senators, 2 from each state, and the House has 435 voting members, with seats divided among the states by population. A bill must pass both chambers in the same form before it goes to the president. Congress also decides how federal money is spent, and bills to raise revenue must start in the House.
Executive branch: carries out laws
The president leads the executive branch, along with the vice president and the federal departments and agencies. The ConstitutionThe highest law of a country or state. It sets up the government, divides its powers and protects rights, and the United States and each state have their own.Read more in the glossary tells the president to “take Care that the Laws be faithfully executed.” The president can sign or VetoA president’s or governor’s formal rejection of a bill passed by a legislature. Congress can override a presidential veto with a two-thirds vote of the members voting in each chamber.Read more in the glossary bills, nominates judges and top officials, and sends Congress a budget proposal each year. Governors and many mayors play a similar role for states and cities.
Judicial branch: decides cases
Federal courts decide cases about the Constitution, federal laws and treaties, plus some other disputes. Courts can strike down laws that violate the Constitution. The president nominates federal judges, and the Senate confirms them. Supreme Court justices and other Article III judges hold office “during good Behaviour,” which U.S. Courts describes as a life TermThe fixed length of time an official serves in office. A US representative’s term is 2 years, a senator’s is 6 years and the president’s is 4 years.Read more in the glossary. States choose their own judges in different ways, including elections and appointments.
How the branches check each other
- The president can veto a bill, and Congress can override the veto with a two-thirds vote in each chamber.
- The president nominates judges and top officials, and the Senate can confirm or reject them.
- The House can impeach an official, and the Senate then holds the trial, where conviction takes two-thirds of the senators present.
- Courts can rule that a law or government action breaks the Constitution.
USAGov says the Constitution divides power this way so that no individual or group will have too much power.
All legislative Powers herein granted shall be vested in a Congress of the United States, which shall consist of a Senate and House of Representatives.
Questions people ask
Does the president control Congress?
Are judges elected?
Who decides whether a law is constitutional?
Sources
Checked November 4, 2026. Primary sources first, then official records, then nonpartisan research.
How these facts were checked: our promise. Every substantive fix is listed on the corrections page.
Keep going
Power
How do checks and balances work?
Congress, the president and the courts can each limit the others through vetoes, overrides, funding, Senate consent, impeachment and judicial review.
Laws
How does a bill become a law?
Follow a federal bill from introduction through committee, both chambers of Congress and the president, including vetoes, overrides and pocket vetoes.
Government
What does the federal government do?
The federal government handles national matters such as defense, money and trade between states. See how Congress, the president and courts share the work.