Apparently, David Shoen has been a part of many cases involving disputed elections and civil rights abuses. Seems to be his specialty. Serving as a lawyer for Epstein doesn't really mean much unless he also was on the flight logs or had some extensive history of working with pedos or something. As a side-note, he has been fairly vocal about Epstein's death not being a suicide, and he defended Roger Stone. Lawyers will lawyer.

https://www.newsweek.com/who-david-schoen-donald-trump-impeachment-lawyer-worked-jeffrey-epstein-1565698 https://www.mediaite.com/trump/one-of-trumps-new-impeachment-lawyers-represented-roger-stone-and-says-jeffrey-epstein-didnt-kill-himself-the-other-declined-to-prosecute-bill-cosby/

As to being on the board or ZOA - I'm relatively new to the .win forums and haven't read much anti-Semitism on any of them. I don't know if ZOA is just an organization that is pro Israel, or if it has some deeper more conspiratorial purpose. So, without further research and conclusive evidence, just because something is pro-Israel, or uses the word Zion(ist) doesn't immediately attach them to conspiracy in my book.