Cross-country marketing enables global firms to address diverse consumer segments through integrated campaigns. However, ethical implementation is restricted by regulatory inconsistencies, cultural sensitivities, data privacy rules, taxation laws, advertising codes, and geopolitical trade barriers. This study analyzes policy barriers that hinder ethical marketing across regions including the European Union, United States, Middle East, South Asia, and East Asia. Using conceptual analysis and simulated survey data, we classify regulatory constraints into five categories: data governance, consumer protection, content censorship, cross-border trade barriers, and digital platform restrictions. Findings indicate that ethical marketing fails not due to lack of corporate policies, but due to misalignment between national regulations and global marketing norms. The study proposes a harmonized governance framework and policy recommendations for ethical international marketing practices.