Academy/How the U.S. Legal System Works/The Three Branches of Government
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The Three Branches of Government

The Three Branches of Government

The United States government is divided into three co-equal branches, each with distinct powers and responsibilities. This structure, known as the separation of powers, was designed by the Framers of the Constitution to prevent any single branch from accumulating too much authority.

The Legislative Branch

Congress — consisting of the Senate and the House of Representatives — is responsible for making federal laws. The Senate has 100 members (two per state), while the House has 435 members apportioned by population. Congress also holds the power of the purse, meaning it controls federal spending and taxation.

Key legislative powers include:

  • Drafting and passing federal statutes
  • Declaring war
  • Confirming presidential appointments (Senate)
  • Impeaching federal officials
  • The Executive Branch

    The President heads the executive branch and is responsible for enforcing and administering federal laws. The executive branch includes the Cabinet, federal agencies like the FBI and EPA, and the military. The President can issue executive orders, negotiate treaties, and grant pardons.

    The Judicial Branch

    The federal judiciary, led by the Supreme Court, interprets the law and determines whether statutes and executive actions are constitutional. Federal judges serve lifetime appointments to insulate them from political pressure. The concept of judicial review — established in Marbury v. Madison (1803) — gives courts the power to strike down unconstitutional laws.

    Checks and Balances

    Each branch can limit the others. The President can veto legislation; Congress can override a veto with a two-thirds vote; and courts can declare laws unconstitutional. This interlocking system ensures accountability and protects individual liberty.

    Quiz: The Three Branches of Government

    Question 1 of 4

    Which branch of government is responsible for making federal laws?