AP Photo/Alex Brandon
Supreme Court nominee Elena Kagan testifies on Capitol Hill in Washington, before the Senate Judiciary Committee hearing on her nomination on June 30, 2010. On Thursday, Aug. 5, the Senate confirmed Kagan as the 112th justice.
AP Photo/Pablo Martinez Monsivais
President Barack Obama, left, walks out with his choice for Supreme Court Justice Solicitor General Elena Kagan, right, and Vice President Joe Biden, center, for an announcement in the East Room of the White House in Washington, Monday, May 10, 2010. On Aug. 5, the Senate voted 63-37 to confirm Kagan as the 112th Supreme Court justice.
AP Photo/J. Scott Applewhite
President Barack Obama and Vice President Joe Biden applaud as Solicitor General Elena Kagan is introduced as President Obama's choice for Supreme Court Justice in the East Room of the White House in Washington, Monday, May 10, 2010.
AP Photo/Susan Walsh
Solicitor General Elena Kagan is applauded by President Barack Obama and Vice President Joe Biden as she is introduced as Obama's nominee for the Supreme Court during an announcement in the East Room of the White House in Washington, Monday, May 10, 2010.
AP Photo/Pablo Martinez Monsivais
President Barack Obama introduces Solicitor General Elena Kagan as his choice for Supreme Court Justice in the East Room of the White House in Washington, Monday, May 10, 2010.
White House Photo/Pete Souza
President Barack Obama meets with Solicitor General Elena Kagan in the Oval Office in April 2010. Mr. Obama named Kagan as his nomination to the Supreme Court, to replace retiring Justice John Paul Stevens, on May 10, 2010.
AP Photo/David Banks
Solicitor General Elena Kagan speaks during the annual meeting of the 7th Circuit Bar Association & Judicial Conference of the 7th Circuit Monday, May 3, 2010, in Chicago.
AP Photo/David Banks
Solicitor General Elena Kagan speaks during the annual meeting of the 7th Circuit Bar Association & Judicial Conference of the 7th Circuit Monday, May 3, 2010, in Chicago.
AP Photo/Jose Luis Magana, File
Solicitor General Elena Kagan speaks during a panel about Women Advocates of the Supreme Court Bar at the Newseum in Washington on Jan. 28, 2010.
AP Photo/Jose Luis Magana, File
U.S. Solicitor General Elena Kagan speaks during a panel about Women Advocates of the Supreme Court Bar at the Newseum in Washington on Jan. 28, 2010.
AP Photo/Harvard University News Office, Jon Chase
U.S. Solicitor General and former Dean of Harvard Law School Elena Kagan, center, listening to law professor Charles Fried, left, alongside law professor John F. Manning, right, on the university campus in Cambridge, Mass., on Sept. 11, 2009. President Barack Obama nominated Kagan to the Supreme Court, Monday, May 10, 2010. On Aug. 5, the Senate voted 63-37 to confirm Kagan as the 112th Supreme Court justice.
AP Photo/Harvard Law School, Phil Farnsworth
U.S. Solicitor General Elena Kaga, left, with U.S. Army General David Petraeus, right, before an event at the school in Cambridge, Mass., June 2, 2009. President Barack Obama nominated Kagan to the Supreme Court, Monday, May 10, 2010.
AP Photo/Harvard University News Office, Stephanie Mitchell
Elena Kagan, then dean of the law school, at the grand opening of the school's new ice skating rink in Cambridge, Mass., on Jan. 21, 2004. President Barack Obama nominated Kagan to the Supreme Court, Monday, May 10, 2010.
AP Photo/Hunter High School
Elena Kagan is seen in a photo from Hunter College High School's 1977 yearbook. Solicitor General Elena Kagan was nominated Monday, May 10, 2010, to the Supreme Court by President Barack Obama.
AP Photo/Hunter College High School
Elena Kagan raises her arm during a class trip to Philadelphia, in a photo from Hunter College High School's 1977 yearbook. On Aug. 5, 2010, the Senate voted 63-37 to confirm Kagan as the 112th Supreme Court justice.
AP Photo/Hunter High School
In this undated photo released by Hunter College High School in New York, Elena Kagan, second from left in the front row, poses with members of the school's student government in the school's 1977 yearbook. Kagan, wearing a robe and holding a gavel, was the student council president. The others are unidentified.