Sen. Mike Lee (R-UT) led a letter addressed to the Secretary of Health and Human Services, Xavier Becerra, Commissioner of the Food and Drug Administration, Robert Califf, and the Acting Director of the National Institutes of Health, Dr. Lawrence Tabak, expressing grave concerns regarding a recent video in which Pfizer employee Dr. Jordon Triston Walker made alarming claims about the company’s research practices and interactions with the Food and Drug Administration (FDA).