In 1973, Republican Vice President Spiro Agnew was forced to resign following a controversy over his personal taxes.
 Under the terms of the 25th Amendment, a vice presidential vacancy is filled when the president nominates a candidate who is confirmed by both houses of Congress.
 Republican President Richard Nixon thus had the task of selecting a vice president who could receive the majority support of both houses of Congress.
 Nixon considered selecting former Texas Governor John Connally, New York Governor Nelson Rockefeller, and California Governor Ronald Reagan.
 However, Nixon settled on House Minority Leader Gerald Ford of Michigan, who was popular among the members of Congress and who was good friends with Nixon.
 Ford won the approval of both houses by huge margins, and was sworn in as the 40th Vice President of the United States on December 6, 1973.
 In 1974, Ford ascended to the presidency after the Watergate scandal led to the resignation of President Nixon.
The presidency of Gerald Ford began on August 9, 1974, when Gerald Ford became President of the United States, and ended on January 20, 1977, a span of days.
 Ford, the 38th United States president, succeeded Richard Nixon, who had resigned from office.
 Prior to this he was the 40th Vice President of the United States, serving from 1973 until President Richard Nixon's resignation in 1974.
 He was the first person appointed to the vice presidency under the terms of the Twenty-fifth Amendment to the United States Constitution, following the resignation of Vice President Spiro Agnew on October 10, 1973.
 Ford has the distinction of being the first, and to date the only person to have served as both vice president and president without being elected to either office.
The 1988 presidential campaign of Joe Biden, the longtime Democratic United States Senator from Delaware and eventual 47th Vice President of the United States began on June 1987.
 He ran for President of the United States in the 1988 United States presidential election.
 He was considered one of the potentially strongest candidates in the field.
 However, in September 1987, newspaper stories stated he had plagiarized a speech by British politician Neil Kinnock.
 Other allegations of past law school plagiarism and exaggerating his academic record soon followed.
 Biden withdrew from the race later that month.
Carrol Howard "Howie" Chandler (born March 16, 1952), is a retired United States Air Force four-star general.
 He last served as the 35th Vice Chief of Staff of the Air Force from August 27, 2009 to January 14, 2011.
 He previously served as Commander of Pacific Air Forces from November 2007 to August 20, 2009 and Deputy Chief of Staff for Operations, Plans and Requirements from October 23, 2005 to November 29, 2007.
 As Vice Chief, he presides over the Air Staff and serves as a member of the Joint Chiefs of Staff Requirements Oversight Council and Deputy Advisory Working Group.
 He assists the Chief of Staff with organizing, training, and equipping of 680,000 active-duty, Guard, Reserve and civilian forces serving in the United States and overseas.
 He retired from the Air Force by March 1, 2011.
 In 2012 he joined Pratt & Whitney Military Engines as Vice President, Military Business Development and International Programs.
Jill Tracy Biden (née Jacobs , previously Stevenson; born June 3, 1951) is an American educator who is married to the 47th Vice President of the United States, Joe Biden.
 She was the Second Lady of the United States from 2009 to 2017.
Electoral history of Joe Biden, 47th Vice President of the United States (2009–2017), United States Senator from Delaware (1973–2009).
 To date Joe Biden has not lost an election.
Sheila Nix is an American political strategist, most recently serving as Chief of Staff to Jill Biden, the wife of Vice President Joe Biden since April, 2013.
The Office of the Vice President includes personnel who directly support or advise the Vice President of the United States.
 The Office is headed by the Chief of Staff to the Vice President of the United States, currently Nick Ayers.
 The Office also provides staffing and support to the Second Lady of the United States.
 It is primarily housed in the Eisenhower Executive Office Building, with offices for the Vice President also in the West Wing, the U.S. Capitol and in the Vice President's official residence.
Joseph Robinette "Joe" Biden Jr. ( ; born November 20, 1942) is an American politician who was the 47th Vice President of the United States from 2009 to 2017.
 A member of the Democratic Party, he represented Delaware as a United States Senator from 1973 until becoming Vice President in 2009.
Gerald Rudolph Ford Jr. (born Leslie Lynch King Jr.; July 14, 1913 – December 26, 2006) was an American politician who served as the 38th President of the United States from August 1974 to January 1977, following the resignation of Richard Nixon.
 Prior to this he served eight months as the 40th Vice President of the United States, following the resignation of Spiro Agnew.
 He was the first person appointed to the vice presidency under the terms of the 25th Amendment, and consequently the only person to have served as both Vice President and President of the United States without being elected to executive office.
 Before his appointment to the vice presidency, Ford served 25 years as U.S. Representative from Michigan's 5th congressional district, the final nine of them as the House Minority Leader.

Question: What American educator, married to the 47th Vice President of the United States, had Sheila Nix as a Chief of Staff?
Answer: Jill Biden