Vice President Joe Biden, accompanied by his wife Jill, signs a condolence book inside the South African Embassy in Washington, Monday, Dec. 9, 2013, as they paid their respects to former South African President Nelson Mandela. (AP Photo/Jacquelyn Martin)
**FILE** Vice President Joseph R. Biden reacts Jan. 21, 2013, with his wife, Jill, as they walk down Pennsylvania Avenue en route to the White House during the 57th presidential inauguration parade after the ceremonial swearing-in of President Obama. (Associated Press)
President Barack Obama and wife Michelle is holds hands with Vice President Joe Biden and his wife Jill following Obama's victory speech to supporters in Chicago early Wednesday, Nov. 7 2012. (AP Photo/Jerome Delay)
Democrat Joe Donnelly celebrates with his wife Jill after winning the U.S. Senate seat over Republican Richard Mourdock at an election night celebration in Indianapolis, Tuesday, Nov. 6, 2012. (AP Photo/Michael Conroy)
** FILE ** Vice President Joseph R. Biden and his wife, Jill, arrive in Charlotte, N.C., on Sept. 4, 2012, to attend the Democratic National Convention. (Associated Press)
Abby Ridgeway, 6, of Woodbridge, Md., tries to stay cool as she lays in the lap of her mother, Jill, as they watch the Memorial Day Parade. (Andrew Harnik/The Washington Times)
Eleven-year-old Forrest Johnston helps his mom Jill prepare dinner at their Great Falls, Va., home on Thursday, March 15, 2012 while sister Beth, 9, and dad Rich look on. (Barbara L. Salisbury/The Washington Times)