Question: Christopher Nixon Cox is the son of an American politician who is currently the chairman of what?

Passages:
David Matthew Kennedy (July 21, 1905May 1, 1996), was an American politician and businessman.  He served as the 60th Secretary of the Treasury and later as the 8th United States Permanent Representative to NATO, both under President Richard Nixon.  He was Chief Executive and Chairman of the Board of Continental Illinois during the 1950s and 1960s. Christopher Nixon Cox (born March 14, 1979) is an American lawyer based in New York.  He is the son of Tricia Nixon Cox and Edward F. Cox and grandson of Richard Nixon, the 37th President of the United States and Pat Nixon, First Lady of the United States. Jeremiah Wilson "Jay" Nixon (born February 13, 1956) is an American politician and lawyer who served as the 55th Governor of Missouri from 2009 to 2017.  A member of the Democratic Party, Nixon was first elected Governor in 2008 and reelected in 2012.  Prior to his governorship, he served as the state's 40th Attorney General from 1993 to 2009. James Paul Mitchell (November 12, 1900October 19, 1964) was an American politician and businessman from New Jersey.  Nicknamed "the social conscience of the Republican Party," he served as United States Secretary of Labor from 1953 to 1961 during the Eisenhower Administration.  Mitchell was a potential running mate for the 1960 Republican presidential candidate, Vice President Richard M. Nixon.  However, Nixon chose Henry Cabot Lodge Jr.  After an unsuccessful run for Governor of New Jersey in 1961, he retired from politics. Kristen Cox (born Kristen Eyring in 1969, Bellevue, Washington) is an American politician and former Executive Director for the Utah Department of Workforce Services, current executive director of Utah Governor's Office of Management and Budget.  Previously Cox served as Maryland Secretary of Disabilities.  Kris Cox was the running mate of Maryland Governor Robert L. Ehrlich in the Maryland 2006 gubernatorial election. Ronald H. Walker (born July 25, 1937) is an American executive.  Walker served in the administration of President Richard Nixon, first as the first Director of the White House Office of Presidential Advance, and later as Director of the National Park Service (1972–1975).  Walker went on to become a senior partner at Korn/Ferry International, President of the Richard Nixon Foundation, and is currently the Chairman of the Board of the Nixon Foundation. Elliot Lee Richardson (July 20, 1920 December 31, 1999) was an American lawyer and politician who was a member of the cabinet of Presidents Richard Nixon and Gerald Ford.  As U.S. Attorney General, he was a prominent figure in the Watergate Scandal, and resigned rather than obey President Nixon's order to fire special prosecutor Archibald Cox. Edward Ridley Finch Cox (born October 2, 1946) is an American politician who is currently the chairman of the New York Republican State Committee.  He is the son-in-law of President Richard M. Nixon and First Lady Pat Nixon.  Cox is a lawyer in the Manhattan law firm of Patterson Belknap Webb & Tyler LLP. William "Bill" Brough (born October 15, 1966) is an American politician currently serving in the California State Assembly.  He is a Republican representing the 73rd district, encompassing southern Orange County.  Prior to being elected to the state assembly, he was a Dana Point councilmember.  Previously, Brough served as Chief of Staff to California State Assemblywoman Diane Harkey in the 73rd Assembly District, as the White House Liaison at the Department of Veterans Affairs in Washington D.C. in the Bush Administration, and as a Congressional Aide to former congressman Christopher Cox.  In 2016, he founded the California Legislative Irish Caucus. Cox Enterprises, Inc. is a privately held American conglomerate based in Atlanta.  Cox is also a communications and automotive services company.  Cox Enterprises is currently headed by the daughter of founder James M. Cox, Anne Cox Chambers, and the two children of her late sister Barbara Cox.  Its chairman is Barbara Cox's son, James C. Kennedy.  Fourth generation members of the Cox family serve on the company's board of directors The family and company were highlighted in a 2015 Forbes article called "This Billionaire Knows the Secret to Saving a Family Business".

Supporting sentences:
 He is the son of Tricia Nixon Cox and Edward F. Cox and grandson of Richard Nixon, the 37th President of the United States and Pat Nixon, First Lady of the United States. Edward Ridley Finch Cox (born October 2, 1946) is an American politician who is currently the chairman of the New York Republican State Committee.