A top Trump appointee repeatedly urged top health officials to adopt a "herd immunity" approach to Covid-19 and allow millions of Americans to be infected by the virus, according to internal emails obtained by a House watchdog and shared with POLITICO.

"There is no other way, we need to establish herd, and it only comes about allowing the non-high risk groups expose themselves to the virus. PERIOD," then-science adviser Paul Alexander wrote on July 4 to his boss, Health and Human Services assistant secretary for public affairs Michael Caputo, and six other senior officials.

"Infants, kids, teens, young people, young adults, middle aged with no conditions etc. have zero to little risk….so we use them to develop herd…we want them infected…" Alexander added.

"[I]t may be that it will be best if we open up and flood the zone and let the kids and young folk get infected" in order to get "natural immunity…natural exposure," Alexander wrote on July 24 to Food and Drug Administration Commissioner Stephen Hahn, Caputo and eight other senior officials. Caputo subsequently asked Alexander to research the idea, according to emails obtained by the House Oversight Committee's select subcommittee on coronavirus.

Alexander also argued that colleges should stay open to allow Covid-19 infections to spread, lamenting in a July 27 email to Centers for Disease Control and Prevention Director Robert Redfield that "we essentially took off the battlefield the most potent weapon we had...younger healthy people, children, teens, young people who we needed to fastly [sic] infect themselves, spread it around, develop immunity, and help stop the spread."