Bob Clark was a television reporter and White House Correspondent for ABC News from the 1960s until the 1970s.
 He is most remembered for reporting the assassinations of John F. Kennedy in 1963 and Robert F. Kennedy in 1968.
 Clark was the only person to see both Kennedy brothers after each was shot in Dallas, Texas and Los Angeles, California, respectively.
Robert Butler Mahone (18 October 1858 – August 18, 1914), better known as Butler Mahone, was appointed Consul of the United States at Nuevo Laredo, Tamaulipas, across the U.S.-Mexico border from Laredo, Texas on January 22, 1898 by U.S. President William McKinley (1843–1901).
Robert Butler (born November 16, 1927) is an American film director and Emmy Award-winning television director.
 He is best known for his work in television, where he directed the pilots for a number of influential series including "Star Trek" and "Hill Street Blues".
Carl Robert Butler, known professionally as Carl Butler, (June 2, 1927 – September 4, 1992) was an American country music singer-songwriter and one half of the husband-and-wife duo Carl and Pearl Butler.
 Carl and Pearl Butler had one of the biggest-selling singles of 1962, "Don't Let Me Cross Over".
 A later single, "Too Late to Try Again", hit #9 on the country charts in 1964 for them, while the B side, "My Tears Don't Show", crept up to #36.
 Butler wrote those 2 songs and also "If Tear Drops Were Pennies" (twice a top ten country hit - Carl Smith in 1951 and Dolly Parton and Porter Wagoner in 1973 - and also a minor hit (#21) on the pop charts for Rosemary Clooney in 1951) and "Crying My Heart Out Over You" (written with Lester Flatt, Earl Scruggs, and Earl Sherry, the song charted for Flatt and Scruggs in 1960, but is best known from the 1982 Ricky Scaggs version, which hit #1).
Benjamin "Bob" Clark (August 5, 1939 – April 4, 2007) was an American actor, director, screenwriter and producer best known for directing and writing the script with Jean Shepherd to the 1983 Christmas film "A Christmas Story".
 Although he worked primarily in the United States, from 1973 to 1983 he worked in Canada and was responsible for some of the most successful films in Canadian film history such as "Black Christmas" (1974), "Murder by Decree" (1979), "Tribute" (1980), and "Porky's" (1982).
Robert Butler (8 March 1852 – 18 December 1916) was an English cricketer.
 Butler was a right-handed batsman who occasionally fielded as a wicket-keeper.
 He was born at Radcliffe-on-Trent, Nottinghamshire.
Bob Clark ("Robert Hyatt Clark;" January 28, 1913 – May 13, 1976) was an American athlete who competed mainly in the Decathlon.
Children Shouldn't Play with Dead Things (also known as "Revenge of the Living Dead", "Things From the Dead", and "Zreaks") is a 1972 comedic horror film directed by Bob Clark.
 It later became a cult classic.
 This low-budget zombie film is the third film of director Bob Clark, who later became famous for directing the films "Black Christmas", "A Christmas Story", and "Porky's".
Allan Robert Butler, OAM (born 1976) from Tumut, New South Wales is an Australian Paralympic athlete.
 In 1993, Butler moved to Canberra to take up a residential scholarship at the Australian Institute of Sport.
Baby Geniuses is a 1999 American family comedy film directed by Bob Clark and written by Clark and Greg Michael based on a story by Clark, Steven Paul, Francisca Matos, and Robert Grasmere, and starring Kathleen Turner, Christopher Lloyd, Kim Cattrall, Peter MacNicol, and Ruby Dee.

Question: Which director worked in more countries, Robert Butler or Bob Clark? 
Answer: Benjamin "Bob" Clark