American Zionist leader. Brought to the U.S. from Lithuania as an infant, he was a founder of Young Judea and served as president of the Zionist Organization of America from 1947 to 1949 and from 1956 to 1958. For more than half a century, he played an important role in the American Zionist movement as a speaker, author, and organizer, and was a member of the Jewish Agency Executive from 1951.