When many Americans received rapid Covid-19 tests in the mail this month — sent as part of the Biden administration’s program to expand access to free testing — the package contained a bright orange box with a small label saying “Made in China.”  Those tests were manufactured by iHealth Labs, the U.S. unit of Chinese medical device company Andon Health. In January, the U.S. Department of Defense (DOD) awarded the company more than $1.7 billion in contracts to provide about 350