Richard Zhu

Constitutional Law Outline

A public-safe doctrine outline from class notes: vagueness, state action, due process, equal protection, and speech.

2026
Constitutional Law Outline cover

What this outline is.

These are public study notes rather than a transcript of class. I kept the doctrine, the analytical sequence, and the exam-useful distinctions; I removed office-hour material, long quotations, private reflections, and raw prompts.

VaguenessCan ordinary people know what the law commands, and can officials enforce it without arbitrary discretion?
State actionConstitutional limits usually bind government conduct, with exceptions when private power is entangled with the state.
Due processAsk whether the claimed liberty is deeply rooted, carefully described, and threatened by the government action.
EqualityIdentify classification, tier of scrutiny, government interest, fit, and the evidentiary story behind the law.

The basic sequence.

  1. Find the actor
  2. Name the right or classification
  3. Choose the scrutiny level
  4. Test interest and fit
  5. Explain remedy and institutional risk

Most constitutional-law analysis fails when it jumps to moral conclusion before building the legal frame. The first questions are mechanical: who acted, what power was used, what right or classification is implicated, and what doctrine governs the court's posture.

Void for vagueness.

The "no vehicles in the park" exercise is useful because it separates ordinary meaning from legal administration. A law can sound clear in conversation and still fail if it gives too little notice or too much enforcement discretion.

Void-for-vagueness analysis checks.
QuestionLook forConsequence
NoticeOrdinary reader.People should know what conduct triggers sanction before the state punishes them.
DiscretionPolice, agencies, courts.Open-ended standards can invite selective or arbitrary enforcement.
ContextCriminal, civil, speech.Criminal penalties and speech-adjacent rules usually demand sharper drafting.

State action.

The Constitution usually constrains government, not every private wrong. The hard cases ask whether private conduct should be treated as state conduct because the state authorized, encouraged, delegated, coerced, or became entwined with it.

The useful public/private distinction is not "was a private party involved?" It is whether the challenged decision can fairly be attributed to the state. Company towns, public functions, court enforcement, state subsidies, licensing, and joint participation all matter, but none is a magic word.

Due process and fundamental rights.

Substantive due process starts with description. If the right is framed too generally, almost any liberty can sound fundamental. If it is framed too narrowly, almost no new claim can survive. The argument lives in that level of generality.

Substantive due-process analysis sequence.
StepQuestionAnalytical risk
DefineWhat exact liberty is claimed?Overbroad framing can smuggle in the result.
HistoryIs it deeply rooted or implicit in ordered liberty?Tradition can stabilize doctrine or freeze exclusion.
BurdenHow directly does the law restrict the liberty?Incidental pressure is different from prohibition.
FitWhat interest does the state assert?The scrutiny level decides how hard the state must work.

Equal protection.

Equal protection is not only about whether a law mentions a classification on its face. It also asks what the law does, why it was adopted, and whether the government can justify differential treatment under the relevant tier of review.

Strict scrutiny usually governs race and national origin. Intermediate scrutiny governs sex-based classifications under modern doctrine, including the important correction that Craig v. Boren is a 1976 case. Rational basis governs most economic and social legislation, but the real work is often in deciding whether the court sees animus, pretext, or a politically vulnerable group.

Speech.

First Amendment analysis needs the same discipline: identify the forum, classify the regulation, decide whether the rule is content based, and test the fit. A speech case is rarely just "speech versus government." It is usually a conflict between speech, place, institutional role, administrative order, and harm.

ForumTraditional public forum, designated forum, limited forum, nonpublic forum.
ContentContent-based and viewpoint-based rules face the hardest review.
CategoryTrue threats, incitement, obscenity, and defamation sit differently from core political speech.
FitEven valid interests can fail when the means burden more speech than doctrine permits.

How I use these notes.

For each problem, I now write a short map before the answer: actor, right, classification, scrutiny, facts that change the tier, and remedy. That keeps the answer from becoming a policy reaction wearing legal language.