is Research Professor of Jewish Social Policy at HUC-JIR and Director of the Berman Jewish Policy Archive at NYU Wagner. In 1992 he made aliyah and taught for 14 years at the Hebrew University of Jerusalem. Previously, he taught at Queens College, with visiting appointments at Yale, Brandeis, and JTS. With Arnold Eisen he wrote The Jew Within, and with Charles Liebman he wrote Two Worlds of Judaism: The Israeli and American Experiences.