Union of Orthodox Jewish Congregations of America and Rabbinical Council of America have issued a joint statement expressing their criticism of the Iran nuclear deal. This comes after they have examined the details.
It remains to be seen how the various and very diverse Jewish communities will react to this deal and how they will communicate their feelings to their elected representatives in Congress.
*Update: Here is an article by Lori Lowenthal Marcus in the Jewish Press that reports the reactions of the major US Jewish organizations to the deal. You will note that J Street is positive while the Jewish Federations of North America are straddling the fence.
Then there is this: Christians and Jews are coming together July 22 with a demand to Stop Iran. However, among the Jewish organizations you will not see J Street or the Jewish Federations of North America. Among the Christian organizations you will not see the Presbyterian Church of North America.