In 1912, he was elected to the
New York State Assembly as a
Democrat with the support of the
Independence League and the
Citizens Union, representing the
New York County 17th District. He served in the Assembly in
1913 (when he introduced the statewide Direct Primary Bill and, speaking out against the impeachment of Governor
William Sulzer, became the only Manhattan Democrat who voted against Sulzer's impeachment) and
1914 (when he received the nomination of both the Democratic and
Progressive Parties). from the singer
John McCormack in 1918. Eisner was a delegate to the
1915 New York State Constitutional Convention. He was a U.S. Internal Revenue Collector from 1915 to 1919 and a lecturer on taxation for the New York School of Finance from 1919 to 1922. He became a member of the law firm Olvany, Eisner & Donnelly in 1924. He was chairman of the judges and lawyer division of the Federation of Jewish Philanthropic Societies from 1924 to 1930. He served as counsel to the
National Recovery Administration in New York City in 1933 and as professor of taxation law in
New York Law School in 1935. His law office was at
20 Exchange Place. Mayor
James J. Walker appointed him a member of the
New York City Board of Higher Education when it was established in 1926, and he served as its chairman from 1932 to 1938. He was also president of the American Association for Jewish Education from 1939 to 1947. He wrote
Lay View of Some of the Problems of Higher Education in 1936 and edited
How Government Regulates Business in 1939. == Later life and death ==