[1] An advocate for social justice, Isaacs is perhaps best known for his support for housing and the work he did with Mayor Fiorello LaGuardia, whom he helped to get elected.
This exposure would lead to further questioning of Moses, and eventually to the fall of the system of political patronage he led in the city.
[3] A graduate of both Columbia College and New York Law School,[4] Isaacs was born in Manhattan to a family of English-Jewish descent.
His paternal grandfather, Samuel Myer Isaacs, was rabbi at Temple Shaaray Tefila.
His father, Myer S. Isaacs, along with his grandfather, published The Jewish Messenger.