Does not matter if it is opensource if a piece of rock is designated a National Security Risk because the Rock came from CHina that is it, that rock is a national security risk. The designation is assigned then action must follow; you cannot question a national security risk that is why it is designated a national security risk if it caused health problems you would be told by the Centers for Disease Control or US Department of Health and Human Services. A National Security Risk can be anything that they assign, it can even be a thought otherwise known as a thought-crime. Stop asking why?