US semiconductor export controls face enforcement and strategic challenges

United States export controls on advanced semiconductors are facing complex challenges regarding enforcement and unintended consequences. In Singapore, a major global hub for chip redistribution, the government maintains export controls based on multilateral non-proliferation lists. Unlike the US, which has implemented unilateral performance thresholds for AI chips, Singapore has not adopted these specific measures, meaning certain chips requiring US licenses may pass through the country without triggering local statutes unless they fall under specific multilateral categories.

Simultaneously, evaluations of four years of US export controls suggest they may have inadvertently bolstered China’s AI ambitions. While intended to deny China frontier hardware, the restrictions have coincided with Chinese chipmakers operating at capacity and Chinese AI models gaining market share by offering significantly lower costs. Some industry observers suggest that these controls have helped Chinese GPU companies survive and close the performance gap with American technology, leading to a potential duopoly of incompatible tech stacks.