Some countries have a separate "constitutional" "court". This is a high court that deals with issues regarding that country's constitution. Other countries do not have separate constitutional courts. Constitutional issues are decided by their supreme court. Nonetheless, such courts are sometimes also called "constitutional courts". For example, some have called the Supreme Court of the United States "the world's oldest constitutional court" because it was the first court in the world to strike down a law as unconstitutional. The case was "Marbury v. Madison", 5 U.S. 137 (1803). Marbury v. Madison also established the US Supreme Court as an equal branch of the United States Government, along with the executive and Legislative branches. The US Supreme court is technically not a constitutional court just as the European Court of Justice is also not a constitutional court. However, both courts engage in a great deal of constitutional review. This means they function like a constitutional court, but are not called constitutional courts.