Renaissance Technologies founder James Simons speaking with Carolyn (Credit: Newsday, 2004)

Renaissance Technologies founder James Simons speaking with Carolyn Kennedy during a news conference announcing that Simons' Math for America organization was funding a program to add 180 new math teachers in New York City schools. (Nov. 19, 2004) Photo by Newsday / J. Conrad Williams

Caroline Kennedy through the years

Renaissance Technologies founder James Simons speaking with Carolyn
(Credit: Newsday, 2004)

Renaissance Technologies founder James Simons speaking with Carolyn Kennedy during a news conference announcing that Simons' Math for America organization was funding a program to add 180 new math teachers in New York City schools. (Nov. 19, 2004) Photo by Newsday / J. Conrad Williams

This photo released by Publicolor shows Caroline Kennedy
(Credit: AP File Photo)

This photo released by Publicolor shows Caroline Kennedy at an event in New York. Kennedy turned 50 on Tuesday, Nov. 27, becoming eligible for membership in AARP.

Caroline Kennedy authographs a copy of her new
(Credit: AP File Photo)

Caroline Kennedy authographs a copy of her new book, "A Family Christmas," during a book signing at the JFK Library in Boston.

U.S. Democratic presidential candidate Illinois Sen. Barack Obama
(Credit: AFP / Getty Images File Photo)

U.S. Democratic presidential candidate Illinois Sen. Barack Obama receives the support of Caroline Kennedy during a rally in East Rutherford, N.J. Obama is on the campaign trail to try to clinch the Democratic Party ticket in the race to the White House.

Caroline Kennedy attends the kick off of the
(Credit: Getty Images File Photo)

Caroline Kennedy attends the kick off of the first annual Madison Avenue Gallery Walk at the Neuhoff Gallery in New York City.

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Sen. Edward Kennedy (D-Mass.), left, and Caroline Kennedy,
(Credit: AP File Photo)

Sen. Edward Kennedy (D-Mass.), left, and Caroline Kennedy, president of the Kennedy Library Foundation, pass each other during a ceremony awarding the Profile in Courage Awards, foreground, at the John F. Kennedy Presidential Library and Museum in Boston. Caroline and her uncle's relationship is deeply rooted not only in the emotion of their current lives, but in the memory of the father she lost and the brother he has tried to stand in for since 1963.

Caroline Kennedy speaks at the Democratic National Convention
(Credit: AP File Photo)

Caroline Kennedy speaks at the Democratic National Convention in Denver. A person close to the discussions says Kennedy will seek the U.S. Senate seat being vacated by Hillary Clinton. Kennedy has told Democratic Gov. David Paterson she wants the job should Clinton be confirmed as secretary of state for President-elect Barack Obama.

Caroline Kennedy Schlossberg waits for the start of
(Credit: Getty Images Photo)

Caroline Kennedy Schlossberg waits for the start of the third presidential debate in the David S. Mack Sports and Exhibition Complex at Hofstra University in Hempstead. This is the final debate before voters will go to the polls in the 2008 general election on Nov. 4.

Caroline Kennedy, left, sits with husband Ed Schlossberg,
(Credit: AP Photo)

Caroline Kennedy, left, sits with husband Ed Schlossberg, before the start of the a presidential debate at Hofstra University in Hempstead. A person close to the discussions says Kennedy will seek the U.S. Senate seat being vacated by Hillary Clinton. Kennedy has told Democratic Gov. David Paterson she wants the job should Clinton be confirmed as secretary of state for President-elect Barack Obama.

Caroline Kennedy, left, daughter of President John F.
(Credit: AP Photo)

Caroline Kennedy, left, daughter of President John F. Kennedy, speaks with Vice President-elect Joe Biden, right, before the start of a special convocation held to present Sen. Edward M. Kennedy (D-Mass.), not shown, with an honorary degree at Harvard University, in Cambridge, Mass. Kennedy was originally scheduled to receive the degree at Harvard's commencement last spring, but was recuperating from surgery.

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Caroline Kennedy, right, chats with her cousin and
(Credit: AP File Photo)

Caroline Kennedy, right, chats with her cousin and matron of honor, Maria Shriver, center, during her wedding in Centerville, Mass. Their uncle, Sen. Edward Kennedy (D-Mass.), is at left. Caroline and her uncle's relationship is deeply rooted not only in the emotion of their current lives, but in the memory of the father she lost and the brother he has tried to stand in for since 1963.

Caroline Kennedy, 3, kisses her baby brother John
(Credit: AP Photo, 1961)

Caroline Kennedy, 3, kisses her baby brother John F. Kennedy Jr. in 1961 in Palm Beach, Fla.

In this April 20, 2008 file photo, Democratic
(Credit: AP Photo)

In this April 20, 2008 file photo, Democratic presidential candidate Sen. Barack Obama, D-Ill. laughs with Caroline Kennedy before addressing supporters at a rally in Scranton, Pa. Although she was no stranger to politics, much was made of the daughter of a president and niece of two senators' decision to go public last January with her support of then-candidate Barack Obama.

In this Tuesday, Sept. 18, 2007, file photo
(Credit: AP Photo)

In this Tuesday, Sept. 18, 2007, file photo provided by Broad Foundation, New York City Department of Education Chancellor Joel Klein, left, New York City Mayor Michael R. Bloomberg, center, and Caroline Kennedy smile after winning The Broad Prize in Washington. In her 22 months working three days a week at the NYC Board of Education, Kennedy was credited with raising tens of millions of dollars and revamping fundraising operations.

Caroline Kennedy, right, is joined by her family
(Credit: AP Photo)

Caroline Kennedy, right, is joined by her family at the grave of her father, slain President John F. Kennedy, at Arlington National Cemetery in Arlington, Va., on the 40th anniversary of JFK's death. Joining Kennedy in the front row are, from right, her son John Schlossberg, her husband Edwin Schlossberg, and daughters Tatiana and Rose Schlossberg.

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Caroline Kennedy speaks at a Get Out The
(Credit: AP Photo)

Caroline Kennedy speaks at a Get Out The Vote event for then Democratic presidential hopeful Sen. Barack Obama, D-Ill. at Pauley Pavillion on the UCLA campus in Los Angeles.

Caroline Kennedy, daughter of former President John F.
(Credit: AP Photo)

Caroline Kennedy, daughter of former President John F. Kennedy, listens to a reporter's question during a news conference at City Hall in Buffalo, N.Y.