In the post-Cold War era, no US competitor or ally achieved 60% of its GDP – except for China. This significant economic milestone and fundamental national differences between China and the United States marked the gradual deterioration of Sino-US relations, beginning during the Obama administration. Under the Trump and Biden administrations, trade competition escalated into a full-fledged technological rivalry. This study sought to address two central questions: why has the US initiated a tech war against China, with the banning of Huawei as a focal point, and how have Washington’s Asian allies (South Korea, Japan, and Australia) responded? Employing a descriptive-analytical approach, the analysis relied on extensive library and documentary research. Accordingly, the hypothesis was that given the US decision-makers’ determination to maintain its global hegemony in technology, the White House tech war with China is driven by two vital reasons: 1. preserving technical, economic, and military leadership in artificial intelligence (AI) and 2. restricting Beijing’s influence in global technological markets by fostering deeper cooperation with its allies. The study revealed that the responses of these three Asian allies of the US align with Washington’s broader strategic objectives toward China, particularly in sanctioning Huawei.