Wow . . . the "right wing, pro-Israel" group is called "Americans for Peace and Tolerance?" Some people seem incapable of thinking for any other justification for a Jewish state in 'Eretz Yisra'el.
I'm glad that J-Street lost the vote, but most member organizations of the Conference of Presidents dissent from leftist orthodoxy on Israel and on no other issue. Similarly, I don't think anyone would be saying "no ideological litmus test" if a socially conservative Jewish organization petitioned to join (of course I could be wrong; it may be that 'Agudat Yisra'el and Chabad are members).
The problem with the Conference is that it was organized to be the "official" voice of the American Jewish community when that position belongs to the Sages and not to secular individuals or organizations.
Might be interesting to get a copy of that documentary "The J Street Challenge" and watch it. Could contain some stuff on J Street that we're not entirely aware of.