The AP US Government exam tests your understanding of American political systems, institutions, and processes. It covers key topics like separation of powers, federalism, civil liberties, and landmark court cases that have shaped the nation's legal landscape.
To succeed, focus on grasping core concepts and their real-world applications. Practice analyzing political data, crafting well-structured essays, and connecting historical events to contemporary issues. Mastering these skills will prepare you for both multiple-choice and free-response sections of the exam.
Separation of powers divides the federal government into three branches (legislative, executive, and judicial) with distinct roles and responsibilities
Checks and balances system allows each branch to limit the power of the others, preventing any one branch from becoming too powerful
Federalism is the division of power between the national and state governments
Enumerated powers are specifically granted to the federal government by the Constitution (regulating interstate commerce, coining money)
Reserved powers belong to the states (establishing local governments, regulating intrastate commerce)
Concurrent powers are shared by both federal and state governments (collecting taxes, establishing courts)
Civil liberties are individual rights and freedoms protected by the Constitution, particularly in the Bill of Rights
First Amendment protects freedom of speech, religion, press, assembly, and petition
Fourth Amendment protects against unreasonable searches and seizures
Due process ensures fair treatment under the law (Fifth and Fourteenth Amendments)
Civil rights are guarantees of equal protection under the law, regardless of race, gender, or other characteristics
Fourteenth Amendment's Equal Protection Clause prohibits discrimination by the government
Civil Rights Act of 1964 banned discrimination in public accommodations and employment
Political parties are organizations that seek to influence government policy by nominating candidates for office and promoting a shared ideology
Two-party system has been dominant in the U.S. (Democrats and Republicans)
Third parties have emerged throughout history (Progressive Party, Green Party) but rarely win major elections
Historical Context
The Constitution was drafted in 1787 to replace the Articles of Confederation, which provided a weak central government
Framers sought to create a stronger federal government while still preserving state sovereignty and individual rights
Bill of Rights, comprising the first ten amendments, was added in 1791 to protect individual liberties
Anti-Federalists insisted on these protections as a condition for ratifying the Constitution
Reconstruction era (1865-1877) following the Civil War aimed to address the status of former slaves and reintegrate Southern states
Thirteenth, Fourteenth, and Fifteenth Amendments were passed to abolish slavery, ensure equal protection, and grant voting rights to African American men
Jim Crow laws and segregation later undermined these efforts
Progressive Era (1890s-1920s) saw reforms aimed at addressing social and economic problems resulting from industrialization
Sixteenth Amendment established the federal income tax
Seventeenth Amendment provided for direct election of U.S. Senators
Nineteenth Amendment granted women the right to vote
Civil Rights Movement (1950s-1960s) sought to end racial discrimination and segregation
Brown v. Board of Education (1954) declared school segregation unconstitutional
Civil Rights Act of 1964 and Voting Rights Act of 1965 were landmark legislative achievements
Major Court Cases
Marbury v. Madison (1803) established the principle of judicial review, asserting the Supreme Court's power to declare laws unconstitutional
McCulloch v. Maryland (1819) affirmed the doctrine of implied powers and the supremacy of federal law over state law
Established that Congress has the power to take actions "necessary and proper" to carry out its enumerated powers
Plessy v. Ferguson (1896) upheld the constitutionality of racial segregation under the "separate but equal" doctrine
Legitimized Jim Crow laws and segregation in public facilities
Brown v. Board of Education (1954) overturned Plessy, declaring that segregated schools are inherently unequal and unconstitutional
Gideon v. Wainwright (1963) ruled that the Sixth Amendment requires states to provide attorneys for criminal defendants who cannot afford them
Roe v. Wade (1973) established a constitutional right to privacy and legalized abortion nationwide
Overturned by Dobbs v. Jackson Women's Health Organization (2022), which held that the Constitution does not protect the right to abortion
Citizens United v. FEC (2010) held that political spending by corporations and unions is a form of protected speech under the First Amendment
Struck down campaign finance restrictions and led to the rise of super PACs
Important Political Figures
George Washington, the first U.S. President, set important precedents (two-term limit, isolationist foreign policy)
Thomas Jefferson, primary author of the Declaration of Independence and third President, advocated for limited government and strict constructionism
Abraham Lincoln, 16th President, led the country through the Civil War and issued the Emancipation Proclamation
Gettysburg Address reframed the war as a struggle for equality and democracy
Franklin D. Roosevelt, 32nd President, implemented the New Deal to combat the Great Depression and led the U.S. through World War II
Served an unprecedented four terms, leading to the 22nd Amendment's two-term limit
Thurgood Marshall, first African American Supreme Court Justice and NAACP lawyer who argued Brown v. Board of Education
Lyndon B. Johnson, 36th President, signed the Civil Rights Act and Voting Rights Act and launched the Great Society programs
Ronald Reagan, 40th President, implemented supply-side economics ("Reaganomics") and pursued a more aggressive foreign policy during the Cold War
Appointed the first woman to the Supreme Court, Sandra Day O'Connor
Constitutional Principles
Popular sovereignty holds that the government's power comes from the people, who elect representatives to govern on their behalf
Limited government means that the government's power is restricted by the Constitution and the rule of law
Prevents arbitrary or excessive use of government authority
Separation of powers divides the federal government into legislative, executive, and judicial branches with distinct roles
Legislative branch (Congress) makes laws
Executive branch (President) enforces laws
Judicial branch (courts) interprets laws
Checks and balances allow each branch to limit the power of the others
Examples: President can veto legislation, Congress can override veto, courts can declare laws unconstitutional
Federalism divides power between the national and state governments
Prevents concentration of power at either level
Allows for experimentation and diversity in state policies
Judicial review, established in Marbury v. Madison, is the power of the courts to declare laws and executive actions unconstitutional
Due process (Fifth and Fourteenth Amendments) ensures fair treatment under the law and protects individuals from arbitrary government action
Government Structures and Processes
Legislative branch (Congress) consists of the Senate and House of Representatives
Senate has 100 members (2 per state) serving 6-year terms
House has 435 members apportioned by state population, serving 2-year terms
Primary powers: lawmaking, taxation, budget appropriation, confirmation of presidential appointments
Executive branch is headed by the President, who serves a 4-year term (limited to 2 terms)