Forty House Republicans on Monday called on President Trump to replace the current head of the National Institutes of Health with someone who will take a stronger position against stem cell research and a form of cloning.

Obama-era appointee Dr. Francis Collins is currently running the NIH, which funds medical research. Though he has been open about his Christian faith, the lawmakers wrote in a letter to Trump that “the stances that Dr. Collins has taken in the past, regarding embryonic stem cell research and human cloning, are not life-affirming and directly conflict with the pro-life direction of the new presidency.” “It is because of this troubling paradox that we ask you to re-consider his leadership role at NIH,” they wrote.