Leo Paul Kocialkowski was a U.S. Representative

United States House of Representatives

The United States House of Representatives is one of the two Houses of the United States Congress, the bicameral legislature which also includes the Senate.The composition and powers of the House are established in Article One of the Constitution...

 from Illinois

Illinois

Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

.

Born in Chicago, Illinois, Kocialkowski was orphaned at an early age.
He was educated in private schools, which he supplemented by a business course.
He worked in various capacities in several business houses in Chicago.
He engaged in tax appraisal and delinquent tax supervision in Cook County, Illinois

Cook County, Illinois

Cook County is a county in the U.S. state of Illinois, with its county seat in Chicago. It is the second most populous county in the United States after Los Angeles County. The county has 5,194,675 residents, which is 40.5 percent of all Illinois residents. Cook County's population is larger than...

 from 1916 to 1932.
He served as delegate to the Democratic National Convention in 1928.

Kocialkowski was elected as a Democrat

Democratic Party (United States)

The Democratic Party is one of two major contemporary political parties in the United States, along with the Republican Party. The party's socially liberal and progressive platform is largely considered center-left in the U.S. political spectrum. The party has the lengthiest record of continuous...

 to the Seventy-third

73rd United States Congress

The Seventy-third United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, DC from March 4, 1933 to January 3, 1935, during the first two years...

 and to the four succeeding Congresses (March 4, 1933-January 3, 1943).
He served as chairman of the Committee on Insular Affairs (Seventy-fourth

74th United States Congress

-House:Also 2 Delegates, 3 Resident Commissioners-Senate:*President of the Senate: John N. Garner *President pro tempore: Key Pittman -Majority leadership:*Majority leader: Joseph T. Robinson...

 through Seventy-seventh

77th United States Congress

-Major events:* December 7, 1941: Attack on Pearl Harbor* December 8, 1941: Joint Session of Congress met to hear President Roosevelt deliver his "Day of Infamy" speech...

 Congresses).
He was an unsuccessful candidate for renomination in 1942.
He served as member of the Civil Service Commission of Cook County, Illinois

Cook County, Illinois

Cook County is a county in the U.S. state of Illinois, with its county seat in Chicago. It is the second most populous county in the United States after Los Angeles County. The county has 5,194,675 residents, which is 40.5 percent of all Illinois residents. Cook County's population is larger than...

 from 1945 to 1949.
He died in Chicago, Illinois, September 27, 1958.
He was interred in St. Adelbert Cemetery.