US Presidential Children

In this undated file photo, President Abraham Lincoln poses with his son Tad. As a youngster in the White House, Tad once hitched two goats to a chair and drove it into a sitting room where his unamused mother was giving a tour.

President Richard Nixon receives a mini surfboard from his daughters, Julie and Trisha, June 13, 1969 at the White House.

President Gerald Ford and his daughter Susan prepare for a White House diplomatic reception in 1974.

President Gerald Ford demonstrates his skill on a trampoline as his daughter Susan looks on at Camp David, Maryland in 1974.

Then-Democratic presidential candidate Jimmy Carter is seen with his wife, Rosalyn, and their daughter, Amy, as he answers reporter's questions in front of the White House in Washington in this April 4, 1976.

Ronald Reagan plays with his daughter Patricia in the pool of their Pacific Palisades, Calif. home in 1966.

California Gov.-elect Ronald Reagan and his wife, Nancy Reagan, and two children, Patricia, 13 and Ronald Jr., 8, tour their new home, the Executive Mansion, after their arrival in Sacramento, Calif., in this Jan. 1, 1967.

President and Mrs. Reagan sent this family portrait to 'America's Family Album,' sponsored by Eastman Kodak Co., and slated for permanent display at the Statue of Liberty. Front row, from

left: Bess Reagan, Neil Reagan, Colleen Reagan (holding daughter Ashley), Cameron Reagan, The President, Mrs. Reagan, Doria Reagan, Anne Davis and Patricia Davis.

Back row: Maureen Reagan, Dennis Revell, Michael Reagan, Patti Davis, Ron Reagan, Geoffrey Davis and Dr. Richard Davis. This photo is dated 1985.

John F. Kennedy Jr. plays in the cockpit of a helicopter while visiting Camp David, Md., in this March 31, 1963.

The family of President John F. Kennedy vacations in this undated photo. From left: Caroline, first lady Jacqueline Kennedy, John Jr. and President Kennedy.

President Kennedy and his son John Jr. stand hand-in-hand at the White House around 1963.

The Bush family is seen in front of their Kennebunkport, Maine, home on August 24, 1986.

BACK ROW: Margaret holding daughter Marshall, Marvin Bush, Bill LeBlond.

FRONT ROW: Neil Bush holding son Pierce, Sharon, George W. Bush holding daughter Barbara, Laura Bush holding daughter Jenna, Barbara Bush, George Bush, Sam LeBlond, Doro Bush Lebond, George P. (Jeb's son), Jeb Bush holding son Jebby, Columba Bush, and Noelle Bush

Caroline Kennedy

File photo of Caroline Kennedy at Hofstra University in Hempstead, New York, October 15, 2008.

In April 20, 2008 file photo, Democratic presidential candidate Sen. Barack Obama, D-Ill. shares a moment with Caroline Kennedy before addressing supporters at a rally in Scranton, Pa. The Kennedy clan wants to see their Caroline in the Senate seat soon to be vacated by Hillary Rodham Clinton. The family just needs to convince her to do it, and New York Gov. David Paterson to put her there.

Caroline Kennedy Schlossberg speaks at the fifth annual John F. Kennedy New Frontier Awards ceremony at the John F. Kennedy School of Government at Harvard University in Cambridge, Massachusetts November 24, 2008.

Daughter of the late US president John F. Kennedy and Jackie Kennedy, Caroline Kennedy Schlossberg, addresses the Democratic National Convention 2008 at the Pepsi Center in Denver in August 2008. Kennedy may take over Hillary Clinton's seat in the Senate when she resigns to become US secretary of state in January, US media reported.

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., Monday, Dec. 1, 2008. Kennedy was originally scheduled to receive the degree at Harvard's commencement last spring, but was recuperating from surgery.

Caroline Kennedy Schlossberg (R) and her daughter Rose listen during a special convocation ceremony to confer an honorary Doctor of Laws degree on U.S. Senator Edward Kennedy (D-MA) at Harvard University in Cambridge, Massachusetts December 1, 2008. Senator Kennedy was initially scheduled to receive the degree at last year's Harvard Commencement ceremonies in June 2008, but was unable to attend while receiving treatment for a malignant brain tumor that was diagnosed in May 2008.

Caroline Kennedy Schlossberg (L) and U.S. Vice President-Elect Joe Biden listen during a special convocation ceremony to confer an honorary Doctor of Laws degree on U.S. Senator Edward Kennedy (D-MA) at Harvard University in Cambridge, Massachusetts December 1, 2008.

Caroline Kennedy Schlossberg (R) and her daughter Rose listen during a special convocation ceremony to confer an honorary Doctor of Laws degree on U.S. Senator Edward Kennedy (D-MA) at Harvard University in Cambridge, Massachusetts.

Caroline Kennedy (C) poses for photographs with the recipients of the fifth annual John F. Kennedy New Frontier Award, Giovanna Negretti (L), co-founder of the Boston-based non-profit Oiste, and Cory A. Booker, Mayor of Newark, New Jersey, at the John F. Kennedy School of Government at Harvard University in Cambridge, Massachusetts November 24, 2008. The awards were created by the John F. Kennedy Library and Harvard's Institute of Politics to honor Americans under the age of 40 who are changing their communities and the country with their commitment to public service.

Giovanna Negretti, co-founder of the Boston-based non-profit Oiste, speaks after being honored with a John F. Kennedy New Frontier Award at the John F. Kennedy School of Government at Harvard University in Cambridge, Massachusetts November 24, 2008. The awards were created by the John F. Kennedy Library and Harvard's Institute of Politics to honor Americans under the age of 40 who are changing their communities and the country with their commitment to public service.

Caroline Kennedy Schlossberg (L) presents the fifth annual John F. Kennedy New Frontier Award to Giovanna Negretti, co-founder of the Boston-based non-profit Oiste, at the John F. Kennedy School of government at Harvard University in Cambridge, Massachusetts November 24, 2008.

Caroline Kennedy Schlossberg (L) presents the fifth annual John F. Kennedy New Frontier Award to Cory A. Booker, Mayor of Newark, New Jersey, at the John F. Kennedy School of government at Harvard University in Cambridge, Massachusetts.

Caroline Kennedy Schlossberg speaks during the fifth annual John F. Kennedy New Frontier Awards ceremony at the John F. Kennedy School of Government at Harvard University in Cambridge, Massachusetts November.

Barack Obama (L) campaigns alongside Caroline Kennedy, daughter of late US president John F. Kennedy in Scranton, Pennsylvania in April 2008. Americans reflected Saturday on the presidency of John F. Kennedy, who was assassinated 45 years ago, as once again a young, inspiring president is headed to the White House.

Then democratic presidential candidate Barack Obama acknowledges the crowd on stage with Arizona Governor Janet Napolitano (L) and Caroline Kennedy during a rally in Phoenix, Arizona, in January 30, 2008. Obama is considering Napolitano to be U.S. Homeland Security secretary, heading a sprawling agency formed to bolster civil defense in the wake of the September 11, 2001 attacks, a senior Democrat said.

Eric Holder, who is reported to be president-elect Barack Obama's pick for US attorney general, walks with Caroline Kennedy, daughter of late US president John F.Kennedy, on Capitol Hill in Washington in June.

In this June 25, 2008 file photo, Eric Holder walks with Caroline Kennedy on Capitol Hill in Washington. Holder is President-elect Barack Obama's top choice to be the next attorney general and aides have gone so far as to ask senators whether he would be confirmed, an Obama official and people close to the matter said Tuesday, Nov. 18, 2008.

Chelsea Clinton

First lady Hillary Rodham Clinton and daughter Chelsea tour the Blue Mosque in Istanbul in this March 28, 1996.

President Clinton's daughter, Chelsea, cheers during Olympic men's individual sabre fencing in Atlanta, in this July 21,1996.

Chelsea Clinton performs Dec. 5, 1996 during the dress rehearsal of the Washington Ballet's version of Tchaikovsky's 'The Nutcracker' at George Mason University's Center for the Arts in Fairfax, Va.


Chelsea Clinton sits with Mark Mezvinsky of Stanford, Calif., while watching a football game on the beach at Hilton Head Island, S.C., in this Dec. 30, 1996.

President Clinton dances with his daughter Chelsea during the Arkansas Ball in Washington in this Jan. 20, 1997.

President Clinton, Mrs. Clinton and daughter Chelsea wave as they walk down Pennsylvania Avenue in this Jan. 20, 1997, to start the presidential inaugural parade.

President and Mrs. Clinton stand with their daughter, Chelsea, after her high school graduation ceremony at Sidwell Friends School in Washington, in this June 6, 1997. President Clinton addressed his daughter's graduating class with a personal sendoff saying, 'A part of us longs to hold you once more'.

President Clinton jogs with daughter Chelsea and an unidentified Secret Service agent along a bike path on Martha's Vineyard, Mass. in this Aug. 19, 1997.

President Clinton, right, shares a laugh with daughter Chelsea, center, and First Lady Hillary Rodham Clinton on Sept. 19, 1997, during convocation ceremonies on the campus of Stanford University in Palo Alto, Calif.

Chelsea Clinton, center, cheers for the Stanford basketball team during their 72-59 win over UCLA at the Pauley Pavilion in the Westwood section of Los Angeles, in this Jan. 16, 1999.

President Bill Clinton with first lady Hillary Rodham Clinton and daughter Chelsea Clinton, talk with NATO's Kosovo commander, Lt. Gen. Mike Jackson, second from right, and NATO Supreme Commander for Europe Wesley Clark, far right, surrounded by U.S. soldiers at Task Force Able Sentry Camp 15 miles (25 kms) east of Skopje, Macedonia, in this June 22, 1999.

President Clinton and daughter Chelsea walk off of Marine One at JFK International Airport in New York City after attending the memorial service for John F. Kennedy, Jr. and his wife Carolyn Bessette Kennedy, July 23, 1999.

Stanford University student Chelsea Clinton listens to a speech by U.S. Secretary of State Madeleine Albright, Oct. 6, 1999, at the Hoover Institution at Stanford University in Stanford, Calif.

Singer Madonna with daughter Lourdes, Chelsea Clinton and designer Donatella Versace attend the launch of the Versace Retrospective Exhibition held at The Victoria and Albert Museum on October 14, 2002, in London.

Chelsea Clinton attends the launch of the Versace Retrospective Exhibition held at The Victoria and Albert Museum on October 14, 2002, in London.

British musician Sting and Bill Clinton's daughter Chelsea speak at the Grand Concert for the Old Vic Theatre in Old Billingsgate Market, on February 5, 2003, in London.

Former President Bill Clinton plants a kiss on his daughter Chelsea's cheek as they arrive at the Metropolitan Museum of Art in New York for a party celebrating the publication of his autobiography 'My Life,' in this June 21, 2004.

Chelsea Clinton waves to the crowd before the 134th Kentucky Derby in this May 3, 2008, at Churchill Downs in Louisville, Ky.

In this file photo, Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y., listens as her daughter, Chelsea, introduces her to supporters during a rally in Sunrise, Fla., May 21, 2008.