Landmark Supreme Court Cases That Shaped America
The Constitution says almost nothing about what the Supreme Court can do. The Court built that power case by case — and in doing so settled questions the other branches could not, from who counts as a citizen to what the police must tell you when they make an arrest. Its decisions have ended segregation and entrenched it, expanded liberty and narrowed it, and twice been reversed by later Courts.
This guide collects thirteen of the most consequential rulings, grouped by the questions they answered. Each links to a full account. Read together, they show a Court that is not above the country's arguments but squarely inside them.
The Court's authority was not handed to it - it was claimed. These early decisions established the power of judicial review and the reach of federal law, building the foundation on which every later ruling rests.
On no question has the Court done more harm and more good. These rulings span its worst decision and some of its most consequential corrections - the long judicial argument over who counts as equal under the law.
These cases define what the state owes a person it accuses of a crime. They translated abstract constitutional guarantees into concrete rules - the warnings, protections, and procedures that govern every arrest.
The Court's recent landmarks have drawn the boundaries of personal liberty and government power in a changing society - decisions on privacy, autonomy, and equality that remain among the most contested in American life.
These rulings interpret the document explained in the guide to the founding fathers and the U.S. Constitution — and several sit at the heart of the civil rights movement.