This comparative legal study by Dr. Baljilali Khaled delves into the critical relationship between constitutional law and legislative authority. It meticulously examines the concept of constitutional oversight as a mechanism to control the discretionary power of the legislator. The book analyzes how different legal systems approach this challenge, exploring the boundaries of judicial review and the principles that ensure legislation adheres to constitutional mandates. It provides a comprehensive analysis for legal scholars, practitioners, and students interested in the balance of power between judicial and legislative branches, offering valuable insights into safeguarding the rule of law within modern states.