White House memos from 1997, when Elena Kagan was a top domestic policy advisor to President Clinton, show that Kagan -- nominated to the Supreme Court by President Obama -- recommended that the Clinton administration permit cloning of human embryos for research purposes. Writing just months after Scottish researchers had announced the birth of a cloned sheep, Kagan and another Clinton aide recommended that the president announce a ban on cloning that would lead to the birth of human infants, but emphasized that the policy "would not ban the creation of cloned embryos for research purposes.