Question: Travelgate was investigated by what American lawyer?

Context paragraphs:
Frank Church: Frank Forrester Church III (July 25, 1924 – April 7, 1984) was an American lawyer and politician.  A member of the Democratic Party, he served as a United States Senator from Idaho from 1957 to 1981.  He is known for heading the Church Committee, which investigated abuses in the United States Intelligence Community.

ALM (company): ALM (formerly American Lawyer Media) is a media company located in New York City, and is a provider of specialized business news and information, focused primarily on the legal, insurance, and commercial real estate sectors.  ALM owns and publishes 33 national and regional magazines and newspapers, including "The American Lawyer", the "New York Law Journal", "Corporate Counsel", "The National Law Journal", "The Legal Intelligencer", "Legal Times" and "Real Estate Forum".  The company also produces conferences and trade shows for business leaders and the legal profession.  Law Journal Press, ALM's professional book imprint, publishes over 130 treatises on a broad range of legal topics.  Other ALM businesses include newsletter publishing, court verdict and settlement reporting, production of professional educational seminars, market research and content distribution.  The company was started in 1979 by Steven Brill to publish "The American Lawyer".

Frederick Larson (filmmaker): Frederick A. "Rick" Larson is an American lawyer and law professor who investigated the Star of Bethlehem and gave presentations around the world and then made a documentary film, "The Star of Bethlehem" about his findings.

Robert Ray (prosecutor): Robert William Ray (born April 4, 1960) is an American lawyer practicing in the New York office of the Dallas-based law firm of Thompson & Knight, LLP.  As the successor to Ken Starr as the head of the Office of the Independent Counsel (1999 to 2002) he investigated and issued the final reports on the Whitewater scandal, the White House travel office controversy, and the White House FBI files controversy.  Before that he was Deputy Independent Counsel investigating former Secretary of Agriculture Mike Espy and before that Assistant United States Attorney for the Southern District of New York.

Nathan Witt: Nathan Witt (February 11, 1903 – February 16, 1982), born Nathan Wittowsky, was an American lawyer who is best known as being the Secretary of the National Labor Relations Board (NLRB) from 1937 to 1940.  He resigned from the NLRB after his communist political beliefs were exposed and he was accused of manipulating the Board's policies to favor his own political leanings.  He was also investigated several times in the late 1940s and 1950s for being a spy for the Soviet Union in the 1930s.  No evidence of espionage was ever found.

White House travel office controversy: The White House travel office controversy, sometimes referred to as Travelgate, was the first major ethics controversy of the Clinton administration.  It began in May 1993, when seven employees of the White House Travel Office were fired.  This action was unusual because although theoretically staff employees serve at the pleasure of the President and could be dismissed without cause, in practice, such employees usually remain in their posts for many years.

Foley &amp; Lardner: Foley & Lardner LLP is an international law firm started in 1842.  According to The American Lawyer, the firm ranked 39th on The American Lawyer's 2011 AmLaw 100 rankings of U.S. law firms, with $633,000,000 in gross revenue in 2010.  Foley & Lardner has been in The American Lawyer's annual AmLaw 100 rankings of U.S. law firms by revenue since 1986.

McCants Stewart: McCants Stewart (July 11, 1877April 14, 1919) was an American lawyer.  Born to a prominent attorney in New York, Stewart studied law in Minnesota and became the first African American lawyer in the state of Oregon.  His lack of financial success in Oregon led him to eventually move to San Francisco, where failing vision led him to commit suicide.  Living in the era of "Plessy v. Ferguson" and "separate but equal" doctrine, his life was said to "reflect an unyielding commitment to the principle of justice for all powerless people in the northwest."

Nader Anise: Nader Anise is an American lawyer and marketer based in Florida, known best as the founder and CEO of Nader Anise Lawyer Marketing.  He is the founder of the "American Lawyers Public Image Association" where he currently serves as national director.  Anise is a former adjunct professor at Nova Southeastern University where he taught law and marketing.  Anise is the founder of Love Your Lawyer Day, an unofficial holiday promoting "no lawyer bashing."

Joseph Flom: Joseph Harold "Joe" Flom (December 21, 1923 – February 23, 2011) was an American lawyer and pioneer of mergers and acquisitions, specializing in representing companies in takeover battles.  By the 1980s, he had acquired a reputation of being "Mr. Takeover" (whereas Martin Lipton was known as "Mr. Defense").  Flom became a partner at what is now known as Skadden, Arps, Slate, Meagher & Flom in 1954, and helped transform it from a four-lawyer firm into one of the largest law firms in the United States.  In 1999, "The American Lawyer" named him one of their "Lawyers of the Century".

Supporting paragraphs: Robert Ray (prosecutor) White House travel office controversy
Answer: Robert William Ray