US urges South Korea to avoid filling China's chip shortfalls.

The US has urged South Korea not to fill any shortfalls in China's semiconductor supply chain if Beijing bans Micron chips. The warning comes as the US and China continue to engage in a trade war, with the US imposing tariffs on Chinese goods and China retaliating with its own tariffs. South Korea is a major supplier of semiconductors to China, and the US is concerned that any attempt to fill the gap left by Micron could undermine its efforts to pressure China into changing its trade practices.