The stem-cell question was one that particularly disturbed Dr Carmona when he was surgeon general. In his evidence to Congress, he reported that he was not allowed to speak, or issue reports, on stem cells. Nor on emergency contraception, sex education, mental health, the health of prisoners or global health.

It is also clear that lifting restrictions on embryonic-stem-cell research will be high on the agenda of the new administration. Democrats are already debating whether to overturn those restrictions through executive order or by legislation when they assume control of the government.