DENVER - AUGUST 27: U.S. Democratic Vice-Presidential nominee Sen. Joe Biden (D-DE) (L) hugs his son Delaware Attorney General Beau Biden, during day three of the Democratic National Convention (DNC) at the Pepsi Center August 27, 2008 in Denver, Colorado. U.S. Sen. Barack Obama (D-IL) will be officially be nominated as the Democratic candidate for U.S. president on the last day of the four-day convention. (Photo by Mark Wilson/Getty Images)
2008 Democratic National Convention: Day 3
DENVER - AUGUST 27: U.S. Democratic Vice-Presidential nominee Sen. Joe Biden (D-DE) (L) is kissed by his son Delaware Attorney General Beau Biden, during day three of the Democratic National Convention (DNC) at the Pepsi Center August 27, 2008 in Denver, Colorado. U.S. Sen. Barack Obama (D-IL) will be officially be nominated as the Democratic candidate for U.S. president on the last day of the four-day convention. (Photo by Mark Wilson/Getty Images)
2008 Democratic National Convention: Day 3
DENVER - AUGUST 27: U.S. Democratic Vice-Presidential nominee Sen. Joe Biden (D-DE) (R) is waks with his son Delaware Attorney General Beau Biden, during day three of the Democratic National Convention (DNC) at the Pepsi Center August 27, 2008 in Denver, Colorado. U.S. Sen. Barack Obama (D-IL) will be officially be nominated as the Democratic candidate for U.S. president on the last day of the four-day convention. (Photo by Mark Wilson/Getty Images)
US Vice-President Joe Biden Visits Iraq
BAGHDAD, IRAQ - JULY 4: U.S. Vice President Joe Biden talks with his son U.S. Army Capt. Beau Biden (L) at Camp Victory on July 4, 2009 near Baghdad, Iraq. Bidden's first visit to Iraq as the Vice President comes days after U.S. forces pulled out from Iraq's cities. (Photo by Khalid Mohammed-Pool/Getty Images)
Sen. John Kerry Campaigns For Democratic Senate Candidate Chris Coons
WILMINGTON, DE - OCTOBER 29: U.S. Sen. John Kerry (D-MA) (L) and Delaware Attorney General Beau Biden talk after campaigning for Delaware Democratic Senate nominee Chris Coons outside the Veterans of Foreign Wars Post 475 October 29, 2010 in Newark, Delaware. Coons is polling in double digits ahead of his opponent Republican Senate nominee Christine O'Donnell going into the last four days of campaigning before Tuesday's midterm elections. (Photo by Chip Somodevilla/Getty Images)
Sen. John Kerry Campaigns For Democratic Senate Candidate Chris Coons
NEWARK, DE - OCTOBER 29: Delaware Attorney General Beau Biden campaigns for Delaware Democratic Senate nominee Chris Coons at the Veterans of Foreign Wars Post 475 October 29, 2010 in Newark, Delaware. Coons is polling in double digits ahead of his opponent Republican Senate nominee Christine O'Donnell going into the last four days of campaigning before Tuesday's midterm elections. (Photo by Chip Somodevilla/Getty Images)
Chris Coons, Delaware Democrats Hold Election Night Gathering
WILMINGTON, DE - NOVEMBER 02: Attorney General Beau Biden (C) celebrates his win with his wife Hallie Biden (R) during a victory party for Democrats on November 2, 2010 in Wilmington, Delaware. Biden won in his re-election bid for Delaware Attorney General against Independent candidate Doug Campbell. (Photo by Mark Wilson/Getty Images)
Obama Accepts Nomination On Final Day Of Democratic National Convention
CHARLOTTE, NC - SEPTEMBER 06: Attorney General of Delaware Beau Biden walks on stage during the final day of the Democratic National Convention at Time Warner Cable Arena on September 6, 2012 in Charlotte, North Carolina. The DNC, which concludes today, nominated U.S. President Barack Obama as the Democratic presidential candidate. (Photo by Alex Wong/Getty Images)
Obama Accepts Nomination On Final Day Of Democratic National Convention
CHARLOTTE, NC - SEPTEMBER 06: Attorney General of Delaware Beau Biden gestures on stage during the final day of the Democratic National Convention at Time Warner Cable Arena on September 6, 2012 in Charlotte, North Carolina. The DNC, which concludes today, nominated U.S. President Barack Obama as the Democratic presidential candidate. (Photo by Chip Somodevilla/Getty Images)
Barack Obama Sworn In As U.S. President For A Second Term
WASHINGTON, DC - JANUARY 21: Beau Biden and U.S. President Barack Obama after U.S. Vice President Joe Biden is sworn in during the public ceremonial inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by Win McNamee/Getty Images)
Attorney General Eric Holder Announces Lawsuit Against Ratings Agency Standard And Poor's
WASHINGTON, DC - FEBRUARY 05: (L-R) Principal Deputy Assistant Attorney General Stuart Delery, District of Columbia Attorney General Irvin Nathan, U.S. Attorney General Eric Holder, Iowa Attorney General Tom Miller, Deleware Attorney General Beau Biden and Illinois Attorney General Lisa Madigan hold a news conference at the Department of Justice February 5, 2013 in Washington, DC. Holder announced that the United States is bringing a civil lawsuit against the ratings agency Standards & Poor's and its parent company, McGraw-Hill Companies, over its pre-fiscal crisis bond ratings. (Photo by Chip Somodevilla/Getty Images)
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(credit: STAN HONDA/AFP/GettyImages)
Beau Biden
Beau Biden.
Beau Biden
Beau Biden. (credit: CBS)
Beau Biden
Beau Biden (credit: Alex Wong/Getty Images)
Clinton, Gates, And Geithner Hold Discussion At Global Leadership Coalition