AQA A-Level Politics USA Government and Politics: a complete overview of the constitution, Congress, the presidency, the Court and comparative politics

What the USA component demands

USA Government and Politics is the study of the American political system and its comparison with the UK. AQA tests precise knowledge of US institutions and skilful comparison using the three comparative theories. The marks are won by explaining UK and US similarities and differences, not by describing them side by side. This guide walks through all six topics in specification order, then sets out the exam patterns AQA repeats. Each topic has a matching dot-point page with practice questions; this overview ties them together.

The constitution and federalism

The US Constitution is codified, entrenched and supreme, creating limited government through the separation of powers, checks and balances, federalism and a Bill of Rights. The branches check one another (the veto, congressional override, Senate confirmation, judicial review). The amendment process is deliberately demanding (two-thirds of Congress, three-quarters of the states), so only 27 amendments have passed. Federalism has shifted from dual to cooperative to a more centralised modern form, and remains contested between national power and states' rights.

Congress

Congress is the bicameral legislature: the House (435 members, two-year terms, by population) and the Senate (100 members, six-year terms, two per state), with broadly equal legislative power. Each has exclusive powers: the House initiates revenue bills and impeaches; the Senate confirms appointments, ratifies treaties and tries impeachments. Bills must pass both chambers in identical form, with committees and the Senate filibuster (the 60-vote cloture threshold) as major obstacles. Congress's three functions are representation, legislation and oversight, often limited by partisanship, gridlock and divided government.

The presidency

The president's formal powers (Article II) include proposing legislation, the veto, commander-in-chief, appointments, treaties and pardons. Informal powers, developed by practice, include executive orders, executive agreements, the power of persuasion and the bully pulpit. The cabinet is advisory and weaker than the UK's; the Executive Office of the President is the main source of advice. The president is checked by Congress, the courts, federalism and the two-term limit. The "imperial presidency" debate turns on mandate, the party balance, approval and events.

The Supreme Court and civil rights

The Supreme Court is the final interpreter of the Constitution and uses judicial review, established in Marbury v Madison (1803), to strike down laws and actions. Justices are nominated by the president and confirmed by the Senate for life, making appointments intensely political. Debates centre on activism versus restraint and originalism versus the living constitution. The Court has shaped civil rights through Brown (1954), Roe (1973) and Dobbs (2022), Heller (2008) and Obergefell (2015).

Democracy and participation

US presidential elections run through primaries and caucuses, conventions, the campaign and the Electoral College (270 of 538), which can elect a president who loses the popular vote (2000, 2016). The Democrats are broadly liberal and the Republicans broadly conservative, both broad coalitions. Interest groups and money shape campaigns, especially since Citizens United (2010) and the rise of super PACs, raising concern about the influence of wealth on democracy.

Comparative theories

AQA requires three approaches. Rational theory explains politics through individual self-interest; cultural theory through shared values and traditions; structural theory through institutions and processes. You apply them to compare UK and US constitutions, legislatures, executives, judiciaries and democracies, identifying both similarities and differences.

How the USA component is examined

A typical AQA profile for USA Government and Politics:

• 25-mark essays. Evaluating the power of an institution, for example "the Supreme Court is the most powerful branch" or "the president dominates US politics".
• Comparative questions. Explaining UK and US differences using rational, cultural or structural theory.
• Case and example use. Deploying landmark rulings and recent elections as evidence.

Check your knowledge

A mix of recall and evaluation prompts covering the USA component. Attempt them under timed conditions, then check against the solutions.

1. State two principles of the US Constitution. (2 marks)
2. Outline the US amendment process. (3 marks)
3. Identify two exclusive powers of the Senate. (2 marks)
4. Explain how the filibuster affects the legislative process. (3 marks)
5. Distinguish between the formal and informal powers of the president. (3 marks)
6. Where did the power of judicial review originate? (1 mark)
7. Explain how the Electoral College can produce a president who lost the popular vote. (3 marks)
8. Name the three comparative theories. (3 marks)