An importance of owning semiconductor producing technologies can’t be overestimated. One of the main aspects of U.S.-China economic war is fight for control such technologies and semiconductor fabs placed on Taiwan. U.S. dependence of advanced chips delivering from there is close to full. Now they aren’t able to organize producing of such types of chips on their own territory in spite of leading in developing them. On the other hand, Beijing is trying to get advanced semiconductor producing technologies. Washington in an attempt to prevent it is imposing sanctions against semiconductor industry of mainland China and escalating tensions in relations between Beijing and Taipei, predicting the imminent outbreak of armed conflict. The article considers U.S. dependence on chips delivery from Taiwanese fabs and U.S. measures on fixing it. Additionally, it estimates the degree of Beijing's interest in taking the island under full control by military means from the point of view of prospects for the semiconductor industry of the PRC.