[3] In May 1920, he presided over the graduation of the second-largest class ever at Rand, whose members included: John J. Bardsley, William D. Bavelaar, Annie S. Buller, Louis Cohan, Harry A. Durlauf, Clara Friedman, Rebecca Goldberg, William Greenspoon, Isabella E. Hall, Ammon A. Hennsey, Hedwig Holmes, Annie Kronhardt, Anna P. Lee, Victoria Levinson, Elsie Lindenberg, Selma Melms, Hyman Neback, Bertha Ruvinsky, Celia Samorodin, Mae Schiff, Esther T. Shemitz, Nathan S. Spivak, Esther Silverman, Sophia Ruderman, and Clara Walters.

[1] Lee was also selected to join Victor L. Berger and Morris Hillquit as delegates of the SPA to a May 1917 general conference of Socialists held in Stockholm on the question of world peace, but was blocked from attending the gathering when the trio were refused passports to travel by Secretary of State Robert Lansing, who characterized the gathering as "a cleverly directed German war move.

"[5] Lee was a consistent opponent of American entry into World War I and he, together with his political co-thinker Morris Hillquit and future Communist leader C. E. Ruthenberg was one of three co-authors of the vigorously anti-militarist St. Louis resolution at the 1917 Emergency National Convention in that city.

[6] He was narrowly defeated for re-election in 1919, but after a two-year recount process it was discovered he and one other Socialist, Edward F. Cassidy, had actually won.

Lee was also a delegate to New York convention to ratify the Twenty-first Amendment to the United States Constitution, which ended Prohibition, in 1933.

During the internal struggle which swept the Socialist Party during the second half of the 1930s, Lee sided with the so-called "Old Guard faction", headed prominently by Louis Waldman and James Oneal.

Lee left the Socialist Party with his "Old Guard" comrades to help form the Social Democratic Federation (SDF) in 1936.

[6] Lee remained affiliated with the SDF for the rest of his life and also participated in the activities of the Liberal Party of New York.