Manning, however, said the Biden administration was taking steps to use the law to expand domestic production of critical equipment for the pandemic response, though he declined to name specific companies involved. The White House also did not respond to a request for comment about the cost of the efforts.

He said the administration was using powers under the Defense Production Act to boost domestic manufacturing of at-home coronavirus tests. With the investments, Manning said, 61 million such tests would be available by the summer.

https://www.washingtonpost.com/health/2021/02...ts-gloves/
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I believe this DPA is a law already in place that the President can use to work with Test Manufacturers for their test manufacturing expansions. I believe they are talking to six test manufacturers.