Joseph,
1. Yes. It is prohibited. At the very best it is bittul zeman. Now answer the question and stop stonewalling. What toelet is there in discussing the Kushners’ deeds (besides the fact that none of us know all of the details). do you really think that one of us will be invited to their home for a Shabbat meal? Do you really think that one of us might be offered a shidduch with one of their children?
2. You and your companions are missing my point regarding the Langer case. If you disagree with Rav Goren how do you dare to question the validity of Ivanka Trump’s conversion? Are you qualified to sit in judgement on your own? Are you even a dayan?