This report analyzes the international human resource management (IHRM) challenges faced by Greenburger, a Chinese fast-food chain, as it expands into the United States. It examines cultural differences between China and the US using Hofstede's 6D model and Trompenaar's 7D model, highlighting their impact on recruitment, selection, and staffing. The report critically discusses the concepts and theories used, and applies them to the impact of IHRM. It explores the implications of these cultural differences, such as power distance, individualism, masculinity, uncertainty avoidance, long-term orientation, and indulgence, and how they affect workplace behavior and employee expectations. The report further analyzes different international expansion strategies, specifically the Ethnocentric, Polycentric, Regiocentric, and Geocentric models, and recommends solutions to address the identified challenges, considering factors like biases, workplace behavior, success orientation, flexibility, laws, and work-life balance. Ultimately, the report provides recommendations to help Greenburger navigate the cultural nuances of the US market and ensure successful international expansion.