Clark T. "Sandy" Randt Jr. (; Pinyin: "Léi Dé"; born November 24, 1945) is an American lawyer and diplomat who served as the United States Ambassador to the People's Republic of China from July 23, 2001 to January 20, 2009, making him the longest-serving U.S. Ambassador to China.
 Randt was formerly a partner with the law firm of Shearman & Sterling in Hong Kong, where he headed the firm's China practice.
Lucas Welch (born 1974 in North Carolina) is a New York-based social entrepreneur.
 Welch founded Soliya, an international nonprofit organization that works on virtual exchange programs among university students in Western and Muslim-majority countries.
 He is known for his role in the establishment of the J. Christopher Stevens Virtual Exchange Initiative, to connect one million young people in the United States and the Middle East.
 Welch currently serves as the executive director of the Pluribus Project, an initiative with the Aspen Institute, to build the political power of the many in the United States.
Joseph Edward Davies (November 29, 1876 – May 9, 1958) was an American lawyer and diplomat.
 He was appointed by President Wilson to be Commissioner of Corporations in 1912, and First Chairman of the Federal Trade Commission in 1915.
 He was the second Ambassador to represent the United States in the Soviet Union and U.S. Ambassador to Belgium and Luxembourg.
 From 1939 to 1941 Davies was Special assistant to Secretary of State Hull, in charge of War Emergency Problems and Policies.
 From 1942 through 1946 he was Chairman of President Roosevelt's War Relief Control Board.
 Ambassador Davies was Special Advisor of President Harry Truman and Secretary of State James F. Byrnes with rank of Ambassador at the Potsdam Conference in 1945.
John Christopher Stevens (April 18, 1960 – September 11, 2012) was an American career diplomat and lawyer who served as the U.S. Ambassador to Libya from May 22, 2012 to September 11, 2012.
 Stevens was killed when the U.S. Special Mission in Benghazi, Libya, was attacked by militants on September 11–12, 2012.
Stanley Tuemler Escudero (born 10 March 1942) is a retired American diplomat who served in the U.S. foreign service in multiple capacities.
 He was U.S. Ambassador to Tajikistan, 1992–1995, U.S. Ambassador to Uzbekistan, 1995–1997, and U.S. Ambassador to Azerbaijan, 1997-2000.
Gene Allan Cretz (born 1950) is a career diplomat who retired from the Senior Foreign Service in 2015.
 Before retiring, he was the U.S. Ambassador to Ghana.
 Before this, he was the first U.S. Ambassador to Libya since 1972, after being nominated in July 2007 by President Bush.
 His nomination was confirmed by the US Senate on November 21, 2008.
 He was sworn-in as U.S. Ambassador to Libya by Secretary of State Condoleezza Rice on December 17, 2008, at the State Department.
 He arrived in Libya on December 27, 2008.
 Cretz speaks a number of languages, including Arabic, Dari, Urdu, and Chinese.
 President Barack Obama nominated him for the post to Ghana in April 2012.
 He was sworn-in as the U.S. Ambassador to Ghana by Secretary of State Hillary Rodham Clinton on September 11, 2012.
 His retirement ceremony was held at the U.S. State Department on Wednesday, July 1, 2015.
Joseph Edward Lake (born October 18, 1941) is an American career diplomat who, in 1990, became the first resident U.S. Ambassador to the Mongolian People's Republic (the first U.S. ambassador to Mongolia, Richard L. Williams, was not a resident there).
 Later, he was named U.S. Ambassador to Albania (1994–1996) and then Deputy Assistant Secretary of State for Information Management (1996–1997).
 He is the father of late science fiction author Jay Lake.
Pamela Jo Howell Slutz (born January 13, 1949) was a career member of the Senior United States Foreign Service who served as U.S. Ambassador to Burundi from November 2009 until February 2012 and as U.S. Ambassador to Mongolia from September 2003 to September 2006.
 She was the recipient of two U.S. Department of State Superior Honor Awards and the Presidential Rank Award of Meritorious Executive.
 Ambassador Slutz retired on April 30, 2012.
 In May 2013 she was named Chairman of the North America-Mongolia Business Council (NAMBC).
George James Tsunis (born December 26, 1967) is an American lawyer and CEO, who was nominated as U.S. ambassador to Norway by President Obama.
 The wait for his confirmation by the Senate caused Norway to be without a U.S. ambassador for an unprecedented 23 months.
 In December 2014, he apparently withdrew his nomination.
Brett H. McGurk (born April 20, 1973) is an American lawyer and diplomat who was appointed by President Barack Obama on 23 October 2015 as Special Presidential Envoy for the Global Coalition to Counter ISIL.
 He replaced General John R. Allen to whom he had been a deputy since 16 September 2014.
 He also served as Deputy Assistant Secretary of State for Iraq and Iran, at the U.S. Department of State, and from October 2014 through January 2016 led 14 months of secret negotiations with Iran that led to a prisoner swap and release of four Americans from Evin Prison in Tehran, including the Washington Post journalist, Jason Rezaian.
 This assignment, among others, reinforced McGurk's "reputation as a doer", according to the NY Times.
 He earlier served under President George W. Bush as Special Assistant to the President and Senior Director for Iraq and Afghanistan, and under President Obama as Special Advisor to the U.S. National Security Council and Senior Advisor to the U.S. Ambassador to Iraq.
 An attorney by training, Mr. McGurk served as a law clerk to Chief Justice William H. Rehnquist on the U.S. Supreme Court during the Court's 2001 October Term.
 On January 19, 2017, President-Elect Donald Trump's press secretary Sean Spicer announced that the incoming administration would retain McGurk in his role leading the counter-ISIS campaign.

Question: What initiative named after a American lawyer who served as the U.S. Ambassador to Libya did Lucas Welch establish?
Answer: Virtual Exchange Initiative