In a significant escalation of trade tensions, former President Trump has ordered U.S. chip software suppliers and designers to cease sales to China. Reports from various sources indicate that this move has resulted in a sharp decline in stock prices for major chip software companies such as Cadence and Synopsys. The U.S. government is reinforcing export controls, particularly targeting design software used in chip manufacturing, with implications for the semiconductor industry. Amid these developments, U.S. officials, including Trump aides, emphasize that such restrictions, especially concerning advanced technologies like EUV lithography, are necessary to maintain a competitive edge against China.