However, Koenig was endorsed by representatives of the District Attorney's office, General Sessions judges, prominent members of the Bar Association, and Governor Charles Seymour Whitman.
The appointment again received attention due to his brother Samuel, although he was endorsed by practically all of the judges and magistrates in New York City, a number of prominent lawyers, and representatives of civic organizations.
In 1935, he sentenced Nelson B. Clark, a former Progressive candidate for Governor of Massachusetts, to ten years in prison for being the alleged brains behind the robbery of a Fifth Avenue luggage store which led to the murder of a policeman.
[2] Over 2,000 people, including political leaders and prominent municipal, county, state, and federal jurists, attended his funeral at the Park Avenue Synagogue, with hundreds gathered outside on the streets in the rain.
The attendees included Mayor Fiorello La Guardia, City Council President Newbold Morris, former Governor Al Smith, former Mayor Jimmy Walker, former Judge Samuel Seabury, District Attorney Thomas E. Dewey with his entire staff, Representative Bruce Barton, Police Commissioner Lewis J. Valentine, License Commissioner Paul Moss, Tammany Hall leader Representative Christopher D. Sullivan, Republican County Committee chairman Kenneth F. Simpson, former Governor Nathan L. Miller, General Sessions Judges Saul S. Streit, Charles C. Nott Jr., Cornelius F. Collins, William Allen, Owen Bohan, and George L. Donnellan, Surrogate James A. Delehanty, Supreme Court Justices Ferdinand Pecora, Bernard L. Shientag, Julius Miller, Isidor Wasservogel, Peter Schmuck, William T. Collins, Phillip J. McCook, Aaron J.