I don’t know his exact position on stem cells and it certainly could be different today than what has been reported in the past.
Here is a little more Wiki trivia I found relevent/facinating:
From 1970 to 1971, he was a Commonwealth Scholar in politics at Balliol College, Oxford. He later moved to the United States, where he attended Harvard Medical School In his freshman year there in 1972, Krauthammer was paralyzed in a serious diving accident. Continuing medical training during his rehabilitation, he earned an M.D. from Harvard Medical School in 1975, and then began working as a psychiatrist at Massachusetts General Hospital.
[snip]
Appointed to President George W. Bush’s President’s Council on Bioethics in 2002, Krauthammer has opposed human experimentation, human cloning and euthanasia[36] but supports relaxing the Bush administration’s limits on federal funding of human embryonic stem cell research.[37]
Krauthammer may have a unique perspective on stem cell research, being a paraplegic himself.
E01
I believe he suffers with MS.