Which Supreme Court case established the precedent regarding laws in opposition to the constitution?

The case that established the precedent regarding laws in opposition to the Constitution is Marbury v. Madison. This landmark decision, decided in 1803, is a foundational case in U.S. law that established the principle of judicial review. Judicial review is the power of courts to examine the actions of the legislative and executive branches and to invalidate laws and executive actions that are found to violate the Constitution.

In Marbury v. Madison, Chief Justice John Marshall articulated that it is the duty of the judiciary to say what the law is, thus asserting that any law that is contrary to the Constitution is not enforceable. This ruling gave the Supreme Court the authority to check the powers of the other branches of government and ensure that no law or governmental action can supersede the Constitution.

The significance of this ruling continues to impact the interpretation and enforcement of the Constitution today, which is why Marbury v. Madison is seen as a cornerstone of constitutional law in the United States.