Scholars from different disciplines have been drawn to cross-Strait relations since Tsai Ing-wen's inauguration in 2016. This article looks at U.S. Taiwan policy from the perspective of the world order, and argues that the world order determines U.S. Taiwan policy. Until recently, Taiwan could always provide what the United States needed in shaping and reshaping the world order. However, along with the rise of the Chinese mainland and the transformation of the world order, Taiwan lost its values in serving America's best strategic interests. Based on examining the current world order, this article argues that it is possible that the United States will abandon Taiwan eventually.