In this Jan. 16, 2019, file photo, acting Environmental Protection administrator Andrew Wheeler arrives to testify at a Senate Environment and Public Works Committee hearing on Capitol Hill in Washington. The EPA says it is moving forward with a response to a class of long-lasting chemical contaminants, amid criticism from members of Congress and environmentalists that it has not moved aggressively to regulate them. In an interview with ABC News Live, Wheeler calls the chemicals commonly referred to as PFAS, “a very important threat.” (AP Photo/Andrew Harnik, File)
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