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In law, a judicial opinion is a formal decision made by a court or tribunal regarding a case it has heard. These opinions serve as precedents, guiding future similar cases. The Supreme Court of the United States, for example, uses judicial review to declare laws unconstitutional and relies on precedents to interpret the Constitution. While federal courts in the U.S. do not issue advisory opinions, some state courts do, offering non-binding legal interpretations on contemplated actions. The Supreme Court's written decisions, including dissenting opinions, clarify and refine legal principles, acting as the supreme law of the land.123456

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