Gershom Gorenberg
The divide between the ultra-Orthodox and other Jews over who is Jewish continues to widen. In the latest developments, ultra-Orthodox rabbis in both Israel and the U.S. have asserted that conversion is reversible — that a convert can cease to be Jewish if she or he does not live according to halakhah, Jewish law, as most strictly and constrictingly interpreted. The immense irony is that regarding conversion as conditional is itself a radical break from halakhic tradition.