The United States has urged South Korea not to fill any supply shortfalls that may result from China's potential ban on US chipmaker Micron Technology. The move comes after reports that Beijing is considering restrictions on Micron's access to Chinese markets, citing national security concerns.

The US is warning that any attempt by South Korea to step in and fill the void left by Micron could have negative consequences for the global semiconductor industry. The US is also concerned that such a move could undermine efforts to address the ongoing semiconductor shortage that has impacted numerous industries worldwide.

The US has been actively seeking to build alliances with other countries to counter China's growing influence in the global technology sector. As part of these efforts, the US has called on South Korea to work together with the US and other allies to address shared concerns about China's economic and technological policies.