At an April 1942 War Relocation Administration conference at Salt Lake City to discuss using Japanese-American internees to help with the farm labor shortage, Governor Clark "went so far as to ask that both Issei and Nisei already residing freely in his state be rounded up and placed under supervision.

"[9] These citizens of Idaho were not covered by the U.S. Government's order forcefully removing people of Japanese descent from the West Coast.

[citation needed] He was the younger brother of Barzilla W. Clark (1880–1943), who preceded him as governor (1937–1939), and was the father-in-law of Frank Church (1924–1984), a four-term United States Senator (1957–1981) and presidential candidate in 1976.

[citation needed] A nephew, David Worth Clark (1902–1955), also represented Idaho in both houses of the United States Congress.

[citation needed] Clark suffered a stroke at age 83 in December 1966,[15] and spent his final weeks at St. Luke's Hospital in Boise, Idaho.

[17][18][2][16] This article incorporates public domain material from the Biographical Directory of the United States Congress