The process of judicial review is a legal mechanism that allows courts to examine the constitutionality of legislative acts or government actions. This power enables judges to invalidate laws or policies that contravene constitutional principles, ensuring the protection of individual rights and maintaining the balance of power among branches of government. Judicial review serves as a crucial check on legislative and executive authority, supporting the rule of law and safeguarding democratic governance. Established in landmark cases, such as Marbury v. Madison, this practice is fundamental to the functioning of modern legal systems.