What gives the Supreme Court its legitimacy, and how do precedent, judicial independence, and public trust sustain the authority of an unelected branch?
Topic 2.9 Legitimacy of the Judicial Branch: explain how the exercise of judicial review in conjunction with life tenure can lead to debate about the legitimacy of the Supreme Court's power.
A focused answer to AP US Government Topic 2.9: how precedent (stare decisis), life tenure, judicial independence, and public trust sustain the legitimacy of the Supreme Court, and the debate over the legitimacy of judicial review.
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What this topic is asking
Topic 2.9 asks a deceptively simple question: why should anyone obey the Supreme Court? Unlike Congress and the president, the justices are unelected and serve for life, yet they can strike down laws passed by elected majorities. The College Board wants you to explain the sources of the Court's legitimacy and the debate over whether judicial review is democratically justified.
What gives the Court legitimacy
The pillars of judicial legitimacy the exam tests are:
- Judicial independence. Article III's life tenure ("during good behavior") and protected salaries insulate justices from electoral and political pressure, so they can decide cases on the law rather than on popularity. Federalist No. 78 defends exactly this.
- Precedent (stare decisis). By following past decisions, the Court appears consistent, predictable, and law-bound rather than political, which reassures the public.
- Reasoned, written opinions. The Court explains its decisions through legal reasoning, inviting scrutiny and building trust in its impartiality.
The debate over judicial review
The legitimacy question is sharpest around judicial review itself. Critics argue that allowing unelected, life-tenured justices to overturn the work of elected legislatures is undemocratic: it lets a handful of judges override the will of the majority. Defenders, echoing Federalist No. 78, reply that an independent judiciary is essential to protect the Constitution and minority rights from temporary majorities, and that the Court's power is checked in other ways. This is the tension the exam wants you to argue.
Why this matters for the exam
Topic 2.9 supplies the conceptual backbone for Argument Essays on whether the Court is too powerful or insufficiently accountable, and for Concept Application items about precedent and independence. It connects directly to the checks studied in Topic 2.11.
Try this
Q1. Name the main sources of the Supreme Court's legitimacy. [Recall]
- Cue. Judicial independence (life tenure), precedent (stare decisis), and public trust in its impartial reasoning.
Q2. Explain why stare decisis supports the Court's legitimacy. [Short explanation]
- Cue. Following precedent makes the Court look consistent and law-bound rather than political, which builds public trust in its impartiality.
Exam-style practice questions
Practice questions written in the style of College Board exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
AP 2018 (style)3 marksCritics argue that unelected Supreme Court justices serving for life should not be able to overturn laws passed by elected legislatures. A. Identify the source of the Court's legitimacy that this criticism questions. B. Explain how the principle of stare decisis supports the Court's legitimacy. C. Explain one reason the framers gave justices life tenure.Show worked answer →
A Concept Application FRQ, 3 points (A, B, C).
A. Identify: the criticism questions the democratic legitimacy of judicial review by unelected, life-tenured justices.
B. Explain stare decisis: by following precedent, the Court appears consistent and impartial rather than political, which builds public trust and legitimacy.
C. Explain life tenure: it insulates justices from political and electoral pressure so they can rule on the law rather than on popularity.
Markers reward connecting legitimacy to precedent, independence, and public trust.
AP 2021 (style)6 marksDevelop an argument about whether life tenure for Supreme Court justices strengthens or weakens the legitimacy of the judicial branch. Use at least one piece of evidence from one of the following: the Constitution of the United States or Federalist No. 78. Provide a defensible thesis, evidence and reasoning, and a response to an opposing perspective.Show worked answer →
An Argument Essay FRQ, 6-point rubric.
Thesis (1): e.g. "Life tenure strengthens legitimacy by protecting judicial independence, even though it can leave justices out of step with public opinion."
Evidence (up to 3): Article III's "good behavior" clause; Federalist No. 78 defending independence; the role of precedent.
Reasoning (1): explain how independence lets the Court rule impartially, building legitimacy.
Alternative perspective (1): concede that unaccountable lifetime power can erode public trust, then argue independence is the greater value.
Related dot points
- Topic 2.8 The Judicial Branch: explain the principle of judicial review and how it checks the power of other institutions and state governments.
A focused answer to AP US Government Topic 2.8: the structure of the federal judiciary under Article III, the principle of judicial review established in Marbury v. Madison, and the argument of Federalist No. 78 for an independent judiciary.
- Topic 2.10 The Court in Action: explain how the exercise of judicial review can affect policymaking, and how judicial activism and restraint shape that role.
A focused answer to AP US Government Topic 2.10: how the Supreme Court shapes policy through its decisions, the difference between judicial activism and judicial restraint, the role of precedent and stare decisis, and how landmark rulings change policy.
- Topic 2.11 Checks on the Judicial Branch: explain how other branches in the government can limit the Supreme Court's power.
A focused answer to AP US Government Topic 2.11: how Congress, the president, and the states check the Supreme Court through appointments, jurisdiction, constitutional amendments, legislation, and non-enforcement, despite judicial independence.
- Topic 2.4 Roles and Powers of the President: explain how the president can implement a policy agenda.
A focused answer to AP US Government Topic 2.4: the formal (Article II) and informal powers of the president, including the veto, commander-in-chief, appointments, treaties, executive orders, and how a president implements a policy agenda.
- Topic 2.5 Checks on the Presidency: explain how the president's agenda can create tension and frequent confrontations with Congress.
A focused answer to AP US Government Topic 2.5: how Congress, the courts, and the Constitution check the president through the override, power of the purse, confirmation, impeachment, and judicial review, and why the president's agenda clashes with Congress.
Sources & how we know this
- AP United States Government and Politics Course and Exam Description — College Board (2020)