What is the significance of the U.S. Supreme Court's decisions?

• A. They set constitutional precedent that lower courts must follow.
• B. They are advisory opinions with no binding effect.
• C. They decide only civil cases.
• D. They determine state criminal penalties.

Answer: (A)

The key idea is that Supreme Court decisions create binding constitutional precedent for all lower courts. When the Court interprets the Constitution in a case, that interpretation becomes the standard every federal court must follow in future cases, and many state courts also align with it. This ensures consistent application of constitutional rights and powers across the entire judiciary and provides a check on laws and government actions.

These rulings aren’t mere opinions without force; they guide how laws are applied and how governmental actions are evaluated for constitutionality. The Court does hear civil and criminal cases, especially on constitutional matters, but its primary impact is establishing the rules that govern all courts. It doesn’t directly set state criminal penalties—the state legislatures do that—but it can declare penalties unconstitutional or require changes to comply with the Constitution.