Scott Pelley speaks to the bereaved families of some of the 400,000 Americans who perished in the pandemic. And In a two-part story, Jon Wetheim reports that Chinese company, BGI Group, offered to build COVID labs in at least six states and U.S. intelligence officials issued warnings not to share health data with BGI. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.