Judicial review is an important part of the system of checks and balances that exists between the three branches of government. It allows the courts to prevent the other two branches from exceeding their powers. For example, if Congress were to pass a law that violated the Constitution, the Supreme Court could strike down that law.
Judicial review is also important for protecting the rights of individuals. It ensures that the government cannot pass laws that violate the rights guaranteed by the Constitution. For example, if the government were to pass a law that restricted freedom of speech, the Supreme Court could strike down that law.
Judicial review is a powerful tool that the courts use to protect the Constitution and the rights of individuals. It is an essential part of the system of government in the United States.