With Trump’s return for his second term as the U.S. president, the CMMC's future whether it will be enforced or significantly modified? Defense supply chain security reflects a nation's ability to safeguard strategic resources, maintain defense self-reliance, and protect critical sensitive information. Taiwan, a key player in the global high-tech supply chain, has long been a target of cyber threats and malicious attacks. In considering CMMC adoption, Taiwan should prioritize "security and self-reliance" as national strategic goals with practical implementation. Strengthening defense supply chain security is not just about expanding industrial cooperation with friendly countries but also ensuring industrial sustainability, self-reliance, and national resilience.