Sorry but this is the same muppet who tried to procure intellectual rights on a vaccine from a German pharmaceutical company working with the German government EXCLUSIVELY for America ?
Which was obviously wrong.
However SKorea has 4 private companies that managed to scale up both their equipment and production of tests. What is wrong with any country, including the US, buying tests or equipment from those companies if they can further expand their supply? Especially as S Korea currently seems to be reducing their testing as their outbreak has, at least for now, subsided.