Elena Kagan's opposition to the Pentagon's "don't ask, don't tell" policy on gay troops is a rare insight into her personal views. Kagan's public record, thinner than most earlier Supreme Court nominees, otherwise offers supporters and critics little assurance about how she would vote as a justice. President Barack Obama nominated Kagan on Monday to replace Justice John Paul Stevens, who will retire this summer. Kagan is expected to vote the same way as Stevens, the leader of the court's liberals, on most issues. But the assessment of her anticipated votes is based more on her affiliation with two Democratic administrations than on her record. With the exception of "don't ask, don't tell," which she condemned as a discriminatory "moral outrage," Kagan has more often been circumspect and cautious about injecting her own views into her public words.She worked in the Clinton White House and the Obama Justice Department, putting forward or defending the administration position.