A U.S. representative has called for the ban of Chinese-manufactured PCs for classified work:
DailyTech previously reported that the US government had planned to spend roughly $13M USD to buy new computer systems from Lenovo. Some government voices were concerned that because the Chinese government owns a portion of Lenovo, the computer systems would pose a security risk to the US.
Republican Representative Frank Wolf then issued a statement to reporters that no government agency doing classified work should use computers manufactured by a Chinese company or made outside of the US. However, most computer manufacturers are off-shoring manufacturing works to other countries.
It looks like it's pretty hard these days to find computers that don't include components manufactured in China. More details and a list of Chinese computers can be found at DailyTech.